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 5 of 7, guides 165 to 205.

File 11 - Digital product passportsPassport data: what to includePassport data sets are defined by the applicable rules for a product group. This guide explains how a data set is chosen and what is left out..GuideFile 11 - Digital product passportsPassport identifiers and data carriersA passport needs a stable product identifier and a carrier that a reader can use. This guide covers identifiers, QR codes, and other carriers..GuideFile 11 - Digital product passportsPassport systems and interoperabilityPassports from different providers must be readable by the same tools. This guide covers passport interoperability..GuideFile 11 - Digital product passportsPassports and recycling informationA passport can carry dismantling and recycling information. This guide explains how that information is sourced and kept current..GuideFile 11 - Digital product passportsPassports for batteriesBatteries are an early product group for digital product passports under the EU Batteries Regulation. This guide explains the battery passport in general terms..GuideFile 11 - Digital product passportsPassports for electronicsElectronics passports would carry composition, repair, and recycling data. This guide covers the traceability work such a passport would rest on..GuideFile 11 - Digital product passportsPassports for textilesTextile passports are discussed in EU product policy as a way to carry composition and care data. This guide explains what a textile passport would need behind.GuideFile 11 - Digital product passportsPreparing for a product passportPreparation starts with identifiers and genealogy, not with software purchase. This guide sets out a preparation sequence..GuideFile 01 - Identity and foundationsReading a traceability claimA claim that a product is traceable, fully traceable, or traced to origin needs to be read against the record behind it. This guide gives a reader the questions.GuideFile 09 - Recall traceback and forward tracingRecall communication and the recordRecall notices must match the trace scope. This guide covers keeping notices, customer lists, and the trace file consistent..GuideFile 09 - Recall traceback and forward tracingRecall records and regulator requestsA regulator may ask for trace records during a recall. This guide covers what is provided, in what form, and how the file is kept..GuideFile 09 - Recall traceback and forward tracingRecall traceback and forward tracingTraceback finds the source of a problem. Forward tracing finds every destination of affected product. A recall needs both, scoped tightly enough to be actionabl.File guideFile 03 - Event records and custody eventsReceiving events and goods inReceiving is the first event in most internal traces. This guide covers what a receiving record must capture, and how it links a supplier lot to internal stock..GuideFile 03 - Event records and custody eventsReconstructing a history from eventsA trace is a reconstruction, not a single document. This guide works through reconstructing a unit history from its event chain..GuideFile 16 - Material originRecycled material originRecycled material has an origin in a waste stream and a reprocessing chain. This guide covers recycled origin and its custody..GuideFile 13 - United States import enforcementResponding to a detentionA detained shipment needs a prompt, organised response. This guide covers the response file, the trace, and the communication with the authorities..GuideFile 14 - Responsible sourcingResponsible sourcing and the trace it rests onResponsible sourcing is due diligence applied to supply chains: identifying risks, acting on them, and showing the work. Traceability supports that work, but it.File guideFile 14 - Responsible sourcingResponsible sourcing and traceability limitsTraceability shows movement and custody. It does not by itself show working conditions. This guide draws that limit clearly..GuideFile 14 - Responsible sourcingResponsible sourcing auditsAn audit checks a supplier against a standard at a point in time. This guide explains what an audit can and cannot show..GuideFile 14 - Responsible sourcingResponsible sourcing for agricultureAgricultural sourcing involves smallholders, cooperatives, and mixed origins. This guide covers agricultural due diligence..GuideFile 14 - Responsible sourcingResponsible sourcing for mineralsMineral supply chains raise specific due diligence questions. This guide explains mineral sourcing frameworks in general terms..GuideFile 07 - Data governance and evidenceRetention and disposal of traceability dataRetention periods follow law, contract, and product risk. This guide covers setting a retention period and disposing of data at its end..GuideFile 17 - Supplier evidence managementReviewing supplier evidenceReview checks that evidence is current, relevant, and consistent. This guide covers review criteria and reviewer roles..GuideFile 07 - Data governance and evidenceReviewing traceability governanceGovernance is reviewed, not set once. This guide covers periodic review of ownership, retention, access, and evidence standards..GuideFile 02 - Lot, batch and serial traceabilityRework and its effect on identityReworked material can break a simple input to output story. This guide covers how rework is recorded so the genealogy stays honest..GuideFile 02 - Lot, batch and serial traceabilitySerial identity for single itemsSerialisation identifies one item at a time. This guide covers when that level is justified, what it costs in data handling, and how serial records link to batc.GuideFile 01 - Identity and foundationsSetting the boundary of a traceEvery trace has a start and an end. This guide covers how to set that boundary, state it plainly, and avoid claiming coverage the record does not have..GuideFile 10 - Traceability software and systemsSoftware for lot and batch traceabilityLot and batch software must handle genealogy, not just stock. This guide covers the genealogy functions to look for..GuideFile 10 - Traceability software and systemsSoftware for serial traceabilitySerial software must handle large volumes of individual records. This guide covers the data and performance questions for serial systems..GuideFile 14 - Responsible sourcingSourcing claims and their evidenceA sourcing claim needs evidence behind it. This guide explains how to test a claim against the record and the due diligence behind it..GuideFile 14 - Responsible sourcingSourcing risk assessmentRisk assessment prioritises due diligence where risk is highest. This guide covers product, geographic, and supplier risk factors..GuideFile 14 - Responsible sourcingSourcing transparency reportsA transparency report publishes sourcing information. This guide covers what a useful report contains and what it leaves out..GuideFile 09 - Recall traceback and forward tracingSpeed in recall tracebackSpeed matters in a recall, but speed without accuracy creates a second problem. This guide covers the trade off and the practices that support both..GuideFile 02 - Lot, batch and serial traceabilitySplit and merge events in identitySplitting a lot or merging lots creates new identities. This guide covers how those events are recorded so no quantity appears twice or disappears..GuideFile 08 - Interoperability and standardsStandards for location identificationA facility needs a stable identifier as much as a product does. This guide covers location identification and facility registers..GuideFile 08 - Interoperability and standardsStandards for product identificationProduct identification standards give a product a stable identity across a chain. This guide surveys the main standards and their scope..GuideFile 05 - Supplier data agreementsSupplier data agreements: what to agree before the first shipmentA supplier data agreement states, before trading starts, what identifiers, events and evidence a supplier will provide, in what format, and by when. This guide.File guideFile 05 - Supplier data agreementsSupplier data and commercial confidentialitySuppliers may hold back data for commercial reasons. This guide separates legitimate confidentiality from data that a trace cannot do without..GuideFile 05 - Supplier data agreementsSupplier data for second tier suppliersA direct supplier is not the end of the chain. This guide covers how data duties are passed to second tier suppliers, and where they stop..GuideFile 05 - Supplier data agreementsSupplier data formats and systemsFormats decide whether supplier data can be used or only filed. This guide covers formats, portals, and the cost of manual re-entry..GuideFile 05 - Supplier data agreementsSupplier data noncomplianceMissing or late supplier data is a supply risk, not just an administrative delay. This guide covers escalation, remedies, and record keeping for noncompliance..Guide