File: Supply chain traceabilityEvidence checked 27 October 2026General information only
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The Custody File: identity, events, evidence
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247 guides across 20 clusters. Each one opens with an evidence file: the question it answers, the evidence level and the first check. Page 4 of 7, guides 124 to 164.

File 10 - Traceability software and systemsImplementing traceability softwareImplementation is a data and process project, not only a software installation. This guide covers implementation in stages..GuideFile 13 - United States import enforcementImporter due diligence for forced labourImporter due diligence combines mapping, risk assessment, and evidence. This guide sets out that work in general terms..GuideFile 13 - United States import enforcementImporter record keeping for forced labourRecord keeping supports both compliance and a response to an enforcement request. This guide covers what to keep and for how long..GuideFile 10 - Traceability software and systemsIntegrating traceability software with ERPEnterprise resource planning systems hold much of the underlying data. This guide covers integration points and their risks..GuideFile 01 - Identity and foundationsInternal traceability inside one siteTraceability between sites gets the attention, but the record inside one site is where input to output links are made or lost. This guide covers internal moveme.GuideFile 08 - Interoperability and standardsInteroperability and data qualityA format can be standard while the data inside it is poor. This guide separates format interoperability from data quality..GuideFile 08 - Interoperability and standardsInteroperability testing between partnersTwo systems that claim to interoperate should be tested together. This guide sets out a partner interoperability test..GuideFile 08 - Interoperability and standardsInteroperability without a shared platformPartners need not use the same platform to share a trace. This guide covers document exchange, portals, and standard messages as alternatives..GuideFile 08 - Interoperability and standardsInteroperability: records that travel between systemsInteroperability means a record created in one system can be read, understood, and trusted in another. This guide explains identifiers, vocabularies, and format.File guideFile 15 - Supplier mapping and facility identificationKeeping a supplier map currentSuppliers change, facilities open and close, and products change source. This guide covers keeping a map current..GuideFile 08 - Interoperability and standardsLegacy systems and traceability interoperabilityOlder systems can still contribute to a trace if their data can be extracted and mapped. This guide covers legacy integration..GuideFile 09 - Recall traceback and forward tracingLessons from a recall traceA recall trace reveals weaknesses in the everyday record. This guide covers capturing those lessons and changing the record process..GuideFile 02 - Lot, batch and serial traceabilityLogistics units and shipping identityCases, pallets and containers carry their own identifiers, and those identifiers must link to the contents inside. This guide covers logistics units and their c.GuideFile 02 - Lot, batch and serial traceabilityLot identity in productionA lot is a quantity produced or received under similar conditions. This guide covers how lots are defined, numbered, and kept separate when they are used togeth.GuideFile 02 - Lot, batch and serial traceabilityLot numbering schemes that survive growthA numbering scheme that works for one site can fail when a second site is added. This guide sets out schemes that stay unique as a chain grows..GuideFile 02 - Lot, batch and serial traceabilityLot, batch and serial: choosing the unit of traceLot, batch and serial are three levels of identity, not three words for the same thing. This guide explains each level, what it can prove, and how to choose bet.File guideFile 06 - Manufacturing genealogyManufacturing genealogy: inputs, transformations, outputsManufacturing genealogy connects a finished batch back to its input lots, through each transformation, in the order it happened. This guide explains the genealo.File guideFile 15 - Supplier mapping and facility identificationMapping and risk prioritisationA complete map lets risk be prioritised by facility and product. This guide connects mapping to risk assessment..GuideFile 15 - Supplier mapping and facility identificationMapping confidentiality and sharingA map may be shared with customers or authorities in part. This guide covers what is shared, and what is held back, and why..GuideFile 08 - Interoperability and standardsMapping data between two systemsMapping translates one system fields into another system. This guide covers mapping, its risks, and how a mapping is tested..GuideFile 15 - Supplier mapping and facility identificationMapping for a single productMapping one product is a manageable starting point. This guide works through a single product map, from inputs to finished goods..GuideFile 15 - Supplier mapping and facility identificationMapping for import complianceImport compliance may require a map back to inputs. This guide connects mapping to import evidence needs..GuideFile 15 - Supplier mapping and facility identificationMapping tiers beyond direct suppliersDirect suppliers are tier one. This guide covers mapping tier two and beyond, and the practical limits of that work..GuideFile 15 - Supplier mapping and facility identificationMapping tools and spreadsheetsA spreadsheet can hold an early map, but it needs discipline to stay accurate. This guide covers mapping tools at different scales..GuideFile 15 - Supplier mapping and facility identificationMapping with supplier cooperationMapping needs supplier cooperation, and suppliers may resist sharing sub-supplier names. This guide covers cooperation and confidentiality..GuideFile 16 - Material originMaterial origin and chain of custodyMaterial origin is where a material came from, and chain of custody is how it moved from there to a finished product. An origin claim needs both, not just the f.File guideFile 20 - Electronics, minerals and batteriesMineral traceability: tin, tantalum, tungsten and goldThe 3TG minerals have established due diligence frameworks. This guide explains mineral traceability in general terms..GuideFile 02 - Lot, batch and serial traceabilityMixed lots and comminglingWhen lots are mixed, the trace changes character. This guide explains commingling, mass balance, and the limits of a claim about a mixed quantity..GuideFile 09 - Recall traceback and forward tracingMock recalls and trace exercisesA mock recall tests the trace under controlled conditions. This guide sets out a mock recall exercise and how its results are judged..GuideFile 16 - Material originOrigin and transformation pointsTransformation can change origin for some purposes and not for others. This guide explains transformation points and their effect on origin..GuideFile 16 - Material originOrigin claims and their evidenceAn origin claim states that a material came from a place, a farm, a mine, or a recycled source. This guide explains the evidence such a claim needs..GuideFile 16 - Material originOrigin claims that overreachAn origin claim overreaches when it covers more product than the record supports. This guide explains how to spot overreach..GuideFile 16 - Material originOrigin documentation for importsImport origin documentation includes declarations, certificates, and supporting records. This guide covers that documentation..GuideFile 16 - Material originOrigin for cotton and fibresCotton origin runs through farm, gin, spinner, and fabric maker. This guide follows that chain..GuideFile 16 - Material originOrigin for minerals and metalsMineral origin involves mines, traders, smelters, and refiners. This guide follows that chain and its custody models..GuideFile 16 - Material originOrigin for mixed materialsMixed materials combine origins. This guide covers mass balance, segregation, and the limits of an origin claim for a mix..GuideFile 16 - Material originOrigin for timber and forest productsTimber origin involves harvest, processing, and trade chains. This guide covers timber origin in general terms..GuideFile 16 - Material originOrigin verification methodsOrigin can be verified by documents, audits, and, in some cases, testing. This guide compares verification methods and their limits..GuideFile 11 - Digital product passportsPassport access and privacyDifferent readers need different passport data. This guide covers access levels, confidentiality, and personal data in passports..GuideFile 11 - Digital product passportsPassport claims and their limitsA passport does not by itself prove sustainability, safety, or origin. This guide draws the limits of a passport claim..GuideFile 11 - Digital product passportsPassport data sources and verificationPassport data is only as good as its sources. This guide covers sourcing, verification, and the difference between declared and checked data..Guide