Map current obligations
Identify jurisdiction, covered products and entities, exemptions, events, data, records, formats, response times, retention, access, and effective dates with qualified review.
LOT · SOURCE · EVENT · LOCATION · CUSTODY
Food Lot
Traceability
Traceability connects a defined lot identifier to the source and handling events needed to follow product through a supply chain. The identifier is only useful when records preserve who handled what, where, when, in what quantity and units, under which event, and how transformations or commingling changed the relationship.
5CHAPTERS4VISUAL BLOCKS11GRAPH LINKS2SOURCES
CONNECT / SELECTED CONCEPTFood Lot TraceabilityStart with the role, then move through the editorial sequence.
HOW TO READ THIS PAGE
Visual explanationA diagram or operating scene makes the relationship visible.
Structured modelA flow, comparison, capability set, or boundary map organizes the idea.
Guided explanationOriginal prose connects the concept to its operating context.
01 / Overview
Trace the product
through linked events.
FDA explains traceability lot codes and their relationship to source locations and other required data in the scope of its Food Traceability Rule. USDA FNS produce material illustrates source, lot, packing, shipping, customer, and commingling records across a produce chain.
Applicable duties, foods, exemptions, dates, events, data elements, retention, response, and jurisdictions must be determined from current authoritative requirements and qualified advice; this briefing teaches the data architecture only.
02 / Trace loop
Assign, link,
transform, retrieve.
01DEFINE / 01Define product and lot identityCommodity and description, internal and external identifiers, source location, field or growing area where applicable, quantity and units, responsible organization, assignment method, and effective time
02EVENT / 02Record each custody eventHarvest, cooling, initial packing, receiving, shipping, holding, repacking or other event as applicable, location, date and time, parties, documents, quantity, units, and condition
03CHANGE / 03Handle transformation and comminglingInputs and lots, output lot, process or transformation, split and merge, waste or loss, quantity conversion, packaging, rework, correction, and preserved lineage
04RETRIEVE / 04Test trace and investigation readinessOne step back and forward or applicable scope, source, destinations, current quantity, documents, contact and system access, exports, corrections, holds, recall authority, and audit evidence
03 / Identity layers
A code is useful
only through its links.
LayerCan supportCannot establish alone
Lot codeStable identifier in a defined record systemSource or custody without linked data
Event recordWho, what, where, when, and quantity contextFood safety or quality
Transformation linkLineage across changed lotsExact physical segregation
Trace exerciseRetrieval evidence for a scenarioCompliance or recall completeness everywhere
04 / Practice
Test retrieval
before an incident.
Prevent silent lot drift
Control code assignment, duplication, reprint, repack, split, merge, transformation, commingling, unit conversion, correction, and retirement.
Validate partner exchange
Test identifiers, locations, quantities, units, dates, reference documents, acknowledgements, rejected records, corrections, and offline fallback.
Run bounded trace exercises
Choose a lot and time, retrieve source and destinations, reconcile quantity, expose gaps, protect sensitive access, document timing, and assign improvements.
05 / Boundaries
Traceability records
do not prove safety.
No regulatory, compliance, recall, food-safety, labeling, records, or legal advice is provided.Use current FDA and other applicable authorities, customers, auditors, food-safety professionals, and qualified counsel.
Do not assume one jurisdictional model is global.Products, events, terminology, exemptions, data, retention, access, timelines, and enforcement differ across markets and change over time.
A database link does not prove physical segregation.Labels, packaging, storage, handling, mass balance, inspections, documents, corrections, and physical controls need independent evidence.
06 / Connections
See the system around this concept.
Follow incoming and outgoing relationship records to understand what supplies, informs, enables, coordinates with, or extends this technology in the published knowledge graph.
Relationship radar / published edges11 records / 10 neighboring systems
Incoming06records point toward this concept
connect roleFood Lot TraceabilitySelected technology
Outgoing05records point from this concept
11connections visible
act / Post-harvest systemsProduce Precooling Process Assurance ↗keeps cooling events attributable within
Cooling evidence remains attributable when commodity, lot, quantity, containers, splits, merges, time, place and responsible parties stay linked through traceability.
connect / Post-harvest systemsRefrigerated Produce Transport Readiness ↗binds vehicle, custody and shipment records to
A transport readiness record can connect lot, quantity, vehicle, custody, departure, arrival and exceptions to traceability without determining legal compliance.
decide / Post-harvest systemsCold-Chain Deviation Investigation ↗enables lot, quantity, movement and destination scoping in
Traceability can bound potentially affected product across lots, splits, merges, custody, shipments, receipts and destinations while preserving uncertainty.
observe / Post-harvest systemsProduce Cold-Chain Monitoring ↗connects condition evidence with
Cooling, storage, transport, and receiving observations become interpretable when they remain linked to the correct product, lot, container, location, quantity, and custody event.
observe / Post-harvest systemsProduce Cold-Chain Monitoring ↗preserves product and lot identity for
Traceability records maintain the source, lot, event, location, quantity, and custody context needed to associate cold-chain observations with the correct product.
position / Geospatial field modelingAgricultural Field Boundary Mapping ↗can preserve source-field context for
A governed field or growing-area identity can contribute source context to produce traceability when linked through harvest and packing records.
connect / Farm softwareFarm Recordkeeping Systems ↗can exchange harvest and source records with
Farm field, harvest, personnel, quantity, packing, and shipment records can support lot traceability through explicit identifiers, units, events, and handoff validation.
decide / Digital agriculture governanceFarm Data Governance ↗coordinates record lifecycle with
Traceability identifiers, events, partner exchange, access, corrections, retention, retrieval, security, and accountability intersect with wider data governance.
decide / Post-harvest systemsOn-Farm Produce Food-Safety Plan Assurance ↗defines products, processes and accountability needed by
Accurate lot tracing depends on the operation map, product definitions, transformations, locations, people and record ownership established by the plan.
decide / Post-harvest systemsProduce Hold, Release and Disposition Assurance ↗provides affected-product lineage and quantity context to
Hold control needs reliable lot, transformation, location, custody, shipment and quantity relationships while preserving uncertainty.
connect / Post-harvest systemsProduce Recall Readiness Coordination ↗provides source, destination and transformation evidence to
Recall coordination relies on lot lineage, shipments, locations, parties, quantities and retrievable records while separately verifying recipient action.
3CONNECTED ROUTES7–13STEP POSITIONS47ROUTE SOURCE LINKS
Operating practice
Build a postharvest cold-chain assurance loop
Follow an identified produce lot from field-heat removal through cold-room zoning, shipment readiness, monitoring, receiving, deviation investigation, traceability and data governance without turning observations into unsupported product decisions.
- 01 / COOLUnderstand precooling assuranceTechnology→
- 02 / REVIEWReview one cooling runField guide→
- 03 / MONITORUnderstand cold-chain monitoringTechnology→
- 04 / ZONEUnderstand cold-room zoningTechnology→
- 05 / MAPReview one cold roomField guide→
- 06 / PREPAREUnderstand transport readinessTechnology→
- 07 / GATERun the pre-load reviewField guide→
- 08 / HANDOFFAudit one cold-chain handoffField guide→
- 09 / INVESTIGATEUnderstand deviation investigationTechnology→
- 10 / REVIEWReconstruct one deviationField guide→
- 11 / TRACEReconnect the food lotTechnology→
- 12 / GOVERNClose the data lifecycleTechnology
CURRENT POSITION11
11 / TRACE
Open the complete route ↗Reconnect the food lot
Follow source, packing, transformation, quantity, location, custody, shipping, receiving, correction and investigation scope.
07 / Evidence
Primary sources.
This original briefing uses FDA traceability-lot guidance and USDA FNS produce-traceability material. It is not a compliance plan, legal opinion, recall procedure, food-safety conclusion, or global traceability standard.
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Ensuring Traceability of Fresh ProduceUSDA Food and Nutrition Service · Accessed 2026-08-04