Raw skins of other animals

1. Scope and Applicability

This conditional method covers fresh or first-stage preserved untanned raw skins of identified species outside bovine, equine, sheep/lamb and goat/kid raw-hide classes (02951–02954) and furrier-use raw furskins (02955). Swine, peccary, reptile, fish and certain deer skins may qualify, subject to actual species, body part and use. Feather-on bird skin may fall in CPC 39110 and cannot be assumed to be 02959. Exclude tanned/dressed skin, leather, detached hair/feathers, fabricated goods and whole animals. Record lawful source, raw state, grade and the actual removal/recovery/curing gate.

The route is species-specific: farmed production, aquaculture, commercial slaughter, lawful wild capture and lawful quality-acceptable recovery are not interchangeable. Count only actual co-products. A recovered skin is not automatically zero burden; a fallen animal does not yield fictitious meat. No common yield, salt dose, moisture change or animal lifetime is prescribed.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.agriculture-forestry-and-fishery-products.live-animals-and-animal-products-excluding-meat.raw-skins-of-other-animals
classification_refs	CPC 3.0 02959 subject to species, use and state review
covered_products	Fresh or first-stage preserved raw non-furrier skins outside 02951–02954.
excluded_products	02951–02955 skins, unsupported feather-on bird skins, tanned or manufactured skins, detached coverings and whole bodies.
representative_product	Accepted species-qualified raw skin sold by measured net mass at its real handover.
production_route	Actual production/capture or lawful recovery; distinct removal, cleaning, grading, optional preservation and presentation.
market_state	Untanned raw skin with species, part, use, state, grade, moisture/salt and gate declared.

3. Reference Flow

Field	Value
What	Accepted raw skin of the declared species, part, use and state at actual handover.
How much	1 kg net as-sold skin excluding packaging and separable free brine or loose salt.
How well	Record legal source, species, part, use, grade, state, moisture/adhering salt and gate.
How long or cycle	Index source/capture, removal, cure and shared service to actual output and reporting period once.
reference_flow_link	raw_skin_product

Field	Value
Reference amount	1
Reference product flow	Species-, state- and gate-qualified raw skin of other animal
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Mass units 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	species; body part; intended use; legal source; fresh/preserved state; grade; moisture/adhering salt; net/tare; gate; period

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
m_net	reference lot	Mass	kg	Calibrated gross less package tare and separable free cure medium yields net skin; disclose retained moisture and adhering salt.
m_state	fresh and cured lots	Mass; moisture/salt fraction	kg; kg/kg	Convert states only from lot-measured before/after mass and fractions; no universal multiplier.
m_balance	each lot	Mass	kg	Reconcile source skin, grades, rejects, added cure medium and measured water/stock change.
m_period	source and shared services	Time; service measure	period; service unit	Link actual source phases and shared floor, cold-room or cure services to periods once.
inventory_reference_normalization	all inventory rows	Actual flow property	exchange unit per reference flow	The inventory and collection aggregation fields below express final amounts per declared reference flow. Keep all raw collection records, original denominator qualifiers, route/period strata, unit conversions and allocation requirements. For each flow, first obtain its attributable amount in its own numerator unit using the existing rules; then divide by the measured accepted reference-output quantity of the same scope and multiply by the declared reference quantity. Do not mix species, states, gates or incompatible routes; count transfers and shared burdens once. A missing, zero or untraceable accepted-output denominator is a blocking data-quality issue. Keep provisional QA ranges on their explicitly stated bases; they are not conversion factors or production defaults. These are final foreground-package contributions, not replacements for stage quantitative references or stage-native unit-process datasets. Retain stage records separately. Compute normalized amount = attributable raw amount * declared reference quantity / measured accepted final reference-output quantity. Apply normalization exactly once.
stage_throughput_linkage	stage records and final package contributions	Actual flow property and its stated raw basis	retain native numerator and stage denominator units	Keep the original lot, event, cohort, period and stage denominators with their units. Reconstruct the attributable numerator A with measured stage quantity Q_stage and documented attribution before final normalization. If a quoted amount a_B corresponds to an explicit stage basis B_stage (for example, 1000 kg), use A = a_B * Q_stage / B_stage. If r_stage is already an intensity in exchange-unit per stage-unit, instead use A = r_stage * Q_stage, with no second division by B_stage. A raw attributable total is used directly. Final contribution = A * declared reference quantity / measured accepted final output. Convert compatible units explicitly and apply each attribution/allocation share exactly once; never treat a quoted amount or intensity as a raw total. Link stage transfers, losses, rejects, stocks, shared services and allocation to the same actual route, period and final-output stratum. For a 1000 kg basis retain 1000 kg explicitly. Do not assume unit yield, equal fresh/dried mass, equal head mass, equal dose quality or interchangeable gates. Missing links, unsupported unit conversion, zero denominators and untraceable allocation block dataset production. Stage-native datasets retain their own stage reference; package contributions are a separate projection.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Identified commercial skin-bearing animal body/part or lawful recoverable material, with upstream source event and boundary documented.
starting_condition_role	Compatible upstream dataset supplies species-specific production/capture, slaughter or recovery burdens to skin-bearing material handoff; foreground begins at distinct removal. Do not repeat upstream removal exchanges.
product_classification_scope	Non-furrier raw skin of another animal, excluding 02951–02955 and bird-skin 39110 where applicable.
recursive_input_rule	Purchased same-category raw skin keeps upstream burden and enters only the later applicable node, never as newly removed skin.
upstream_dataset_requirement	Actual animal/capture/recovery source, real output set, legal status, co-product and period attribution.
disclosure	Species, part, use, source, route, grade, state, gate, legal status, allocation, periods, rejections and shared services.

Boundary Rules

rule_id	Applies to	Rule	source_ids
b_source	source routes	Match upstream production, capture, slaughter or lawful recovery to real species and handoff; no invented farm for wild capture, meat for fallen animals, or automatic zero-burden skin.	un-cpc-3-notes;fao-hides-skins
b_remove	removal	Remove actual skin independently from source production/capture and first conditioning; separate incidental tissue and damage.	fao-hides-skins
b_prepare	first conditioning and grade	Include actual first cleaning/fleshing and grading; exclude liming, tanning, dressing and leather manufacture.	fao-hides-skins;un-cpc-3-notes
b_preserve	cured lots	Fresh sale bypasses cure; record actual chill/dry/salt/brine method, before/after masses, inputs, service and residues without generic recipe.	fao-hides-skins
b_gate	handover	Include only necessary protection to the actual removal/recovery/curing handover; exclude post-gate freight and transformation.	fao-hides-skins

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
remove	Species-qualified skin removal	required	newly sourced skin lots	Distinct skin removal from commercial or lawful recovered body.	kg removed skin
condition	First raw-skin conditioning	required	untreated skin lots	First cleaning and trim before grade.	kg prepared skin
grade	Quality and destination sorting	required	prepared lots	Accepted and saleable downgrade versus rejection.	kg saleable grade
preserve	Optional raw preservation	conditional	cured lots	Actual stabilization; fresh lots bypass.	kg preserved skin
handover	Protective presentation and handover	required	saleable fresh or cured grade	One net sold state at actual gate.	kg net sold skin

The upstream source ledger enumerates only real meat, fish-body, breeding, egg, fibre or other independent products for the actual species and phase. It hands the skin-bearing body to removal once; subsequent cleaning is separate. Each grade takes either fresh or preserved path. Charge shared flaying tables, wash equipment, cold rooms and cure areas once by measured service time/throughput and period across consuming nodes.

Process: Species-qualified skin removal (remove)

Inputs

Product flows

Commercial skin-bearing body (commercial_body)

Only an actually marketed body or portion of the declared species; upstream source data stop at this handoff.

Denominator and scope requirements：per kg removed skin

Raw quantity and calculation requirements: Weigh actual input and record source, species and body part. Original collection denominator kind: process_output.

• Selected flow: Species-qualified commercial skin-bearing body or portion (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_remove
• Range: Input ledger QA, not a skin-yield factor
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg removed skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Lawful recovered skin-bearing material (recovered_body)

Use only when the actual source is legally Waste and recovery is permitted; a marketable Product source uses the other card, not both.

Denominator and scope requirements：per kg removed skin

Raw quantity and calculation requirements: Weigh recovered input; retain authorization and terminal-treatment alternative. Original collection denominator kind: process_output.

• Selected flow: Species-qualified recoverable body material with documented Waste status (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_remove
• Range: Recovery ledger QA, not a yield factor
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg removed skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Outputs

Product flows

Fresh removed skin (removed_skin)

Hand off the species- and part-qualified untanned skin to first cleaning exactly once.

Denominator and scope requirements：per kg removed skin

Raw quantity and calculation requirements: Weigh before cleaning and link source event. Original collection denominator kind: process_output.

• Selected flow: Fresh removed raw skin of the declared species (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_remove
• Range: Exact normalized measured output
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 1
  • Unit: kg/kg
  • Basis: per kg removed skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Collected record (collected_record)

Waste flows

Removal damage and incidental tissue (removal_reject)

Nonsaleable cuts/tissue go to actual treatment; a separately sold part needs a separate Product decision.

Denominator and scope requirements：per kg removed skin

Raw quantity and calculation requirements: Weigh residue separately from saleable skin. Original collection denominator kind: process_output.

• Selected flow: Nonsaleable removal residue by destination (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_residue
• Range: Residue ledger QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg removed skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: First raw-skin conditioning (condition)

Inputs

Product flows

Raw skin before first cleaning (raw_in)

Use removed-skin handoff or purchased same-category untreated skin with upstream burden, not a second removal.

Denominator and scope requirements：per kg prepared skin

Raw quantity and calculation requirements: Measure incoming mass and source ticket once. Original collection denominator kind: process_output.

• Selected flow: Species-qualified raw skin before cleaning (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_condition
• Range: Incoming lot QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg prepared skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Cleaning water supply (clean_water)

Record actual supplied water by source and subtype; no default wash rate.

Denominator and scope requirements：per kg prepared skin

Raw quantity and calculation requirements: Meter actual water supplied to this node. Original collection denominator kind: process_output.

• Selected flow: Water supplied for first skin cleaning (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_condition
• Range: Water ledger QA, not a wash recipe
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg prepared skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

First-cleaned raw skin (prepared_skin)

Prepare only by first cleaning/fleshing/trimming, not tannery treatment.

Denominator and scope requirements：per kg prepared skin

Raw quantity and calculation requirements: Weigh skin at grade handoff. Original collection denominator kind: process_output.

• Selected flow: Species-qualified first-cleaned raw skin (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_condition
• Range: Exact normalized measured output
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 1
  • Unit: kg/kg
  • Basis: per kg prepared skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Collected record (collected_record)

Waste flows

First-cleaning trim (clean_trim)

Separate actual skin/tissue trim from wastewater; report wastewater in its own treatment ledger.

Denominator and scope requirements：per kg prepared skin

Raw quantity and calculation requirements: Weigh non-saleable trim and identify destination. Original collection denominator kind: process_output.

• Selected flow: Nonsaleable cleaning trim by waste destination (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_residue
• Range: Trim ledger QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg prepared skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Quality and destination sorting (grade)

Inputs

Product flows

Prepared skin for grading (grade_in)

Match prepared lot to actual species, body part and use before grade partition.

Denominator and scope requirements：per kg saleable graded skin

Raw quantity and calculation requirements: Weigh received lot and match cleaning ticket. Original collection denominator kind: process_output.

• Selected flow: Species-qualified first-cleaned raw skin (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_grade
• Range: Grade-input ledger QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg saleable graded skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Accepted-grade skin (grade_accepted)

Direct each actual accepted lot either to fresh handover or cure, never both.

Denominator and scope requirements：per kg saleable graded skin

Raw quantity and calculation requirements: Weigh grade lot and document unique destination. Original collection denominator kind: process_output.

• Selected flow: Species-qualified accepted raw-skin grade (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_grade
• Range: Grade partition, not a prescribed share
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1
  • Unit: kg/kg
  • Basis: per kg saleable graded skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Collected record (collected_record)

Saleable downgraded skin (grade_downgrade)

Only separately saleable lower grade is Product; if unsaleable, use rejected Waste instead.

Denominator and scope requirements：per kg saleable graded skin

Raw quantity and calculation requirements: Weigh lower grade with real price and destination. Original collection denominator kind: process_output.

• Selected flow: Species-qualified saleable lower-grade raw skin (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_grade
• Range: Grade partition, not a prescribed share
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 1
  • Unit: kg/kg
  • Basis: per kg saleable graded skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Collected record (collected_record)

Waste flows

Unsaleable rejected skin (grade_reject)

Record actual treatment destination, not fictitious co-product credit.

Denominator and scope requirements：per kg saleable graded skin

Raw quantity and calculation requirements: Weigh rejection and document cause. Original collection denominator kind: process_output.

• Selected flow: Species-qualified rejected raw skin by destination (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_residue
• Range: Reject ledger QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg saleable graded skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Elementary flows

Process: Optional raw preservation (preserve)

Inputs

Product flows

Saleable skin before cure (cure_in)

Fresh sale bypasses this node; only saleable grade chosen for cure enters.

Denominator and scope requirements：per kg cured skin

Raw quantity and calculation requirements: Weigh pre-cure lot and grade. Original collection denominator kind: process_output.

• Selected flow: Species-qualified graded raw skin before actual cure (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preserve
• Range: Before-state ledger QA, not cure factor
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg cured skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Electricity at the equipment supply point (cure_energy_electricity)

Collection scope and applicability for cure_energy. The following concrete identities have separate cards and apply only when use or generation is evidenced inside the original process scope. They are not mandatory inputs or a default recipe. Document non-use; missing records are not zero. Add a separate concrete card for any other actual material instead of substituting one of these names or UUIDs. Preserve attribution and boundaries and avoid double counting components included in outsourced services.

Meter actual electricity, fuel or other energy carrier for chilling/drying/curing and shared service once. Denominator and scope requirements：per kg cured skin Raw quantity and calculation requirements: Meter real carrier energy by method, lot and node. Original collection denominator kind: process_output.

Confirm identity, grade, state and unit from equipment, supplier and contemporaneous measurements; the product UUID does not establish actual use or upstream-provider compatibility. Retain the electricity supply point, fuel grade, density and heating-value basis. Distinguish purchased heat from on-site fuel conversion without counting its input fuel again.

• Selected flow: Alternating current 455f0ef5-6118-4f2b-a3f5-1f75e0afe3ca
• Flow property / unit: Energy / kWh
• Amount rule: Collect raw quantities for this identity under cp_preserve and calculate the exchange per declared reference flow using the original attribution rules.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per declared reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preserve
• Sources: fao-agricultural-energy

This binding is alternating current at the use point with supply technology, voltage and provider unspecified. Confirm actual AC supply; DC requires a different identity. The database reference is 1 MJ: preserve meter kWh and convert once using 1 kWh = 3.6 MJ when linking reference quantities. Internal generation links to its foreground generator, without an additional purchased-electricity burden.

Diesel fuel supplied to equipment (cure_energy_diesel)

Confirm identity, grade, state and unit from equipment, supplier and contemporaneous measurements; the product UUID does not establish actual use or upstream-provider compatibility. Retain the electricity supply point, fuel grade, density and heating-value basis. Distinguish purchased heat from on-site fuel conversion without counting its input fuel again.

• Selected flow: Diesel fuel 9d258d75-6792-4f1c-9856-81602ed8f816
• Flow property / unit: Mass / kg
• Amount rule: Collect raw quantities for this identity under cp_preserve and calculate the exchange per declared reference flow using the original attribution rules.
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per declared reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_preserve
• Sources: fao-agricultural-energy

Waste flows

Elementary flows

Outputs

Product flows

Preserved still-raw skin (cured_skin)

Declare measured after-state, moisture and adhering salt without liming, tanning or dressing.

Denominator and scope requirements：per kg cured skin

Raw quantity and calculation requirements: Weigh after cure and reconcile actual input, added medium, losses and rejects. Original collection denominator kind: process_output.

• Selected flow: Species-qualified preserved untanned skin (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_preserve
• Range: Exact normalized measured output
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 1
  • Unit: kg/kg
  • Basis: per kg cured skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Collected record (collected_record)

Waste flows

Elementary flows

Process: Protective presentation and handover (handover)

Inputs

Product flows

One incoming saleable skin state (handover_in)

Each physical lot arrives once from fresh grading or preserved output, never both.

Denominator and scope requirements：per kg net sold skin

Raw quantity and calculation requirements: Match grade, state and source ticket to actual gate. Original collection denominator kind: process_output.

• Selected flow: Species-qualified saleable fresh or preserved raw skin (UUID unresolved)
• Flow property / unit: Mass / kg
• Amount rule: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_handover
• Range: State-path ledger QA only
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 0
  • Upper: 100000
  • Unit: kg/kg
  • Basis: per kg net sold skin
  • Basis kind: Process output (process_output)
  • Evidence kind: Reasoned estimate (reasoned_estimate)

Waste flows

Elementary flows

Outputs

Product flows

Net raw skin at actual gate (raw_skin_product)

One broad reference-output role instantiated by actual species, part, grade, state and gate; one UUID is not assumed to represent all variants.

Raw reference-output records: Weigh net sold skin excluding package and separable free cure medium. Preserve the measured accepted lot quantity and every required qualifier. The amount below is the normalized reference exchange, not an assertion that a physical lot contains only one unit.

Denominator and scope requirements：per reference flow

• Selected flow: Species-, state- and gate-qualified raw skin of other animal
• Flow property / unit: Mass / kg
• Amount rule: 1 kg
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per reference flow
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_handover
• Range: Exact reference mass identity
  • Range role: QA guardrail (qa_guardrail)
  • Lower: 1
  • Upper: 1
  • Unit: kg/kg
  • Basis: per 1 kg net reference skin
  • Basis kind: Reference flow (reference_flow)
  • Evidence kind: Collected record (collected_record)

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
a_source	actual upstream output set	Enumerate only real separate meat, fish-body, breeding, eggs, fibre or other saleable products for the declared species and phase. Prefer defensible causal physical allocation; otherwise document economic allocation with period prices and sensitivity. Never give skin automatic zero or all animal burden.	fao-hides-skins
a_recovery	lawful recovery	Document pre-existing source burden, legal recovery and actual terminal-treatment alternative; justify burden and separately report any avoided-treatment credit without fictional meat.	fao-hides-skins
a_grade	sale grades and cure	Attribute each accepted or downgraded marketable grade at one real handover, with rejects and retained salt/moisture distinct; cure mass does not create extra skin.	fao-hides-skins
a_period	source phases and shared assets	Index relevant husbandry/aquaculture/capture, slaughter/recovery, cold-room and cure periods. Divide actual flaying, washing, chilling and cure service among consuming nodes and periods by measured use or supported causal driver exactly once.	fao-hides-skins

Concrete cards do not inherit numerical ranges from the former aggregate card. Determine quantities from original records, stock/meter reconciliation and the declared reference flow; no default quantity or numeric screen is supplied without evidence matching the identity, unit, period and boundary. Missing range evidence is a quality disclosure, not zero use or proof of completeness.

8. Foreground Data Collection, Calculation, and Quality Rules

Specific input identification before dataset completion

Identify the actual input for this operation from supplier specifications, equipment and primary records. This is a mandatory collection requirement, not an exchange. Before dataset completeness, represent each used material, formulated product, carrier or independently purchased service by one physically specific card with its native quantity/property; confirm a compatible UUID, or retain an explicit unresolved identity and do not claim a fully linked dataset. Do not substitute a conditional example for an unknown actual input, invent a recipe, omit required use or infer zero from missing records. Attribute shared use, reusable assets and inclusive services once; preserve the original stage/period and measured throughput link to final reference output. The former aggregate range is not a component limit or consumption default.

requirement_id	collection_protocol_id	Preserved collection scope
protective_package_specific_input	cp_handover	Operation handover: Record actual wrap/crate or reusable support before gate; later distribution is excluded. Denominator and scope requirements：per kg net sold skin Raw quantity and calculation requirements: Weigh consumed material or allocate measured reuse service by actual uses. Original collection denominator kind: process_output. Original quantity method: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records.

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_remove	remove	source body and removed skin	source/removal ledger	species, part, lawful source, Product/Waste status, event, body/skin mass, real co-products, period	source ticket and calibrated scale; Raw aggregation requirements: source and removal once per skin lot. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again.	kg;period	each event	source and removal periods	supplier and removal site	per reference flow	authorization, ticket, calibration; traceable numerator, accepted reference-output denominator and normalization worksheet
cp_condition	condition	raw in, water, cleaned skin	preparation ledger	source lot, water subtype, mass, cleaning action, trim	meter and scale; Raw aggregation requirements: input/output by lot. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again.	kg	each lot	preparation period	actual site	per reference flow	meter, scale and work ticket; traceable numerator, accepted reference-output denominator and normalization worksheet
cp_grade	grade	accepted, downgrade and reject	grade ledger	species, part, grade, mass, reason, destination	grade ticket and scale; Raw aggregation requirements: disjoint grade sums. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again.	kg	each lot	grade period	actual site	per reference flow	dispatch/reject tickets; traceable numerator, accepted reference-output denominator and normalization worksheet
cp_preserve	preserve	optional cure inputs/outputs	cure ledger	lot, method, input/output mass, salt/brine, moisture, energy, residue, service time	scale, test and meter; Raw aggregation requirements: linked before/after and service sum. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again. cure_medium_specific_input: Only actual salt, brine or other legally used raw-state medium; never assume every species is salted. Denominator and scope requirements：per kg cured skin Raw quantity and calculation requirements: Weigh added medium; split retained and spent mass. Original collection denominator kind: process_output. Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records. Identify the actual input for this operation from supplier specifications, equipment and primary records. This is a mandatory collection requirement, not an exchange. Before dataset completeness, represent each used material, formulated product, carrier or independently purchased service by one physically specific card with its native quantity/property; confirm a compatible UUID, or retain an explicit unresolved identity and do not claim a fully linked dataset. Do not substitute a conditional example for an unknown actual input, invent a recipe, omit required use or infer zero from missing records. Attribute shared use, reusable assets and inclusive services once; preserve the original stage/period and measured throughput link to final reference output. The former aggregate range is not a component limit or consumption default.	kg;MJ;period	each cured lot	cure/service periods	actual site	per reference flow	recipe, test and meter; traceable numerator, accepted reference-output denominator and normalization worksheet
cp_handover	handover	net skin, package and gate	dispatch ledger	species, part, use, source, state, grade, gross/tare, net, package reuse, gate	dispatch ticket and scale; Raw aggregation requirements: one net mass per physical lot. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again. protective_package_specific_input: Operation handover: Record actual wrap/crate or reusable support before gate; later distribution is excluded. Denominator and scope requirements：per kg net sold skin Raw quantity and calculation requirements: Weigh consumed material or allocate measured reuse service by actual uses. Original collection denominator kind: process_output. Original quantity method: Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records. Identify the actual input for this operation from supplier specifications, equipment and primary records. This is a mandatory collection requirement, not an exchange. Before dataset completeness, represent each used material, formulated product, carrier or independently purchased service by one physically specific card with its native quantity/property; confirm a compatible UUID, or retain an explicit unresolved identity and do not claim a fully linked dataset. Do not substitute a conditional example for an unknown actual input, invent a recipe, omit required use or infer zero from missing records. Attribute shared use, reusable assets and inclusive services once; preserve the original stage/period and measured throughput link to final reference output. The former aggregate range is not a component limit or consumption default.	kg	each sale lot	actual gate event	actual site	per reference flow	ticket and calibration; traceable numerator, accepted reference-output denominator and normalization worksheet
cp_residue	remove;condition;grade;preserve	reject and waste	treatment ledger	lot, material, mass, classification, destination, period	scale and transfer record; Raw aggregation requirements: once by route/material. Apply the existing route, period, conversion and allocation rules; retain raw totals and the measured accepted reference-output denominator for the same scope. Perform final normalization exactly once; do not divide an already normalized amount again. cure_residue_specific_output: Track actual waste destination; water evaporation is not a solid waste skin. Denominator and scope requirements：per kg cured skin Raw quantity and calculation requirements: Weigh spent/rejected material and measure water loss separately. Original collection denominator kind: process_output. Calculate the attributable final-package exchange under inventory_reference_normalization and stage_throughput_linkage using the matched raw records. This is a mandatory specific-output collection requirement, not a selected exchange. Preserve every actual waste, residue, reject and co-product from this operation. Create separate cards for physically distinct streams with actual material, composition/state, quantity, receiving route and Product/Waste role before dataset completeness; verify a compatible UUID or explicitly retain its unresolved identity. A genuinely mixed stream may remain one physically defined mixture supported by composition records; never invent separation or count its components again. Keep liquid and solid treatment quantities separate. Preserve original period, output balance, reference normalization and allocation rules; missing records do not establish zero or exclusion.	kg	each event	relevant periods	origin site	per reference flow	transfer record and scale; traceable numerator, accepted reference-output denominator and normalization worksheet

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
c_net	handover lot	net raw skin = gross sale mass minus package tare and separable free brine/loose salt; disclose retained moisture/adhering salt	cp_handover;cp_preserve	kg net sold skin	fao-hides-skins
c_balance	removal to handover	skin input plus added cure medium = sale grades plus rejects/residue plus measured moisture/stock change and documented residual	cp_remove;cp_condition;cp_grade;cp_preserve;cp_handover	kg residual	fao-hides-skins
c_period	source and shared service	attribute each actual phase, flaying/cleaning/cold-room/curing service once to consuming lot and period	cp_remove;cp_condition;cp_preserve	burden/kg	fao-hides-skins
c_norm	final exchange	attributable quantity divided by positive net mass of same species, state and gate lot	cp_handover;cp_remove;cp_condition;cp_preserve	unit/kg skin

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
q_identity	every lot	Confirm species, part, use, raw condition, CPC exclusion review, lawful source and actual gate.	source, grade and dispatch records
q_mass	every lot	Calibrate net/tare; measure cure state, moisture/salt and mass residual without universal yield.	scale, test and balance worksheet
q_route	every lot	Preserve real source/capture/slaughter/recovery route, actual products/periods and nonduplicated upstream removal.	route and allocation ledger
q_uuid	final dataset	Resolve exact flow type, species, state, property/unit, gate and destination for each exchange before TIDAS construction.	verified flow evidence

9. Validation Rules

rule_id	Applies to	Rule	source_ids
v_scope	reference lot	Reject species/use assigned to 02951–02955, tannage/further preparation, whole animals, and unsupported feather-on bird-skin 02959 claims.	un-cpc-3-notes;un-cpc-39110
v_route	source/removal	Require lawful species-specific source and removal distinct from source production/capture and first preparation; no invented farm for wild animal or meat for recovered animal.	fao-hides-skins
v_balance	each lot	Reconcile fresh, accepted, downgrade, reject, cure medium and net sold states to measured uncertainty; investigate unexplained residual.	fao-hides-skins
v_allocation	phases and shared assets	Reject unsupported zero/whole-animal burden, duplicate product, repeated asset period or arbitrary universal co-product rule.	fao-hides-skins
v_identity	concrete final exchange	A broad unresolved card is not a final UUID; verify species, part, raw state, property, actual gate and direction. Goat skin, furskin or whole fish cannot substitute.
v_foreground_emission_responsibility	Actual operated nodes and linked services	Record responsibility for on-site fuel combustion and refrigerant leakage when applicable: either quantified foreground emissions or a named linked process explicitly covering them, never merely a fuel-supply or electricity-production input. Assess special-taxon biological and residue emissions using species/route evidence, without a generic livestock factor. Identify any unresolved pathway and withhold a completeness claim; document supported absence and prevent duplicate upstream/downstream accounting.

10. Published Dataset Profile

Field	Value
dataset_role	Species-, route-, part-, grade-, state- and gate-qualified raw-other-animal-skin foreground dataset.
downstream_use	Candidate secondary_dataset or background_dataset only after concrete identities, review and publication.
allowed_use	Same species/use/state/gate comparison or measured lot-specific state conversion.
excluded_use	Cross-species substitution, goat/furskin/feather-on-bird automatic mapping, tanning/leather, universal yield/cure, unsupported zero burden.
required_metadata	Species, part, use, lawful source, route, grade, state, net mass, moisture/salt, gate, periods, real output set and allocation.
required_quality_disclosure	Co-product/period attribution, grade/cure mass balance, rejects, shared-service driver and unresolved UUIDs.
update_trigger	Exact platform flow confirmation, changed species/route/classification, new measured state or allocation evidence.

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-notes	official_guidance	UN CPC 3.0 explanatory notes	raw-skin scope and exclusions
un-cpc-39110	official_guidance	UNSD CPC 39110	feather-on bird-skin classification check
fao-hides-skins	official_guidance	FAO Hides and Skins	first preparation, cure and route method
fao-agricultural-energy	official_guidance	FAO Energy demand and consumption in African agriculture, Annex C case-study results, https://www.fao.org/4/v9766e/v9766e08.htm	conditional concrete identities and method context; does not establish site use or quantities