Manufacturing, Testing & Quality
Traceability and Lot-Record Planning
Traceability should connect a finished cable assembly or lot to the decisions the equipment program may need later. Define the part and revision, lot or unit level, component and process records, inspection and test evidence, label and package identifiers, shipment link, retention, and retrieval method before production begins.
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Decision summary
What to carry into the decision
- Start with the decision the record must support, then choose lot- or unit-level identifiers.
- Keep revision and configuration visible so traceability does not link unlike builds together.
- Name the component, process, inspection, test, packaging, and shipment fields actually required.
- Test record retrieval with a sample identifier before release.
In this guide
- 1Begin with the retrieval question
- 2Traceability matrix
- 3Choose lot or unit level deliberately
- 4Plan the record flow
- 5Test retrieval before production
- 6Common traceability mistakes
Use the sections in sequence, then turn the open items into one controlled build or sourcing package.
Begin with the retrieval question
State what someone should be able to learn from an assembly, lot, package, or shipment identifier. Examples include the governing revision, component lot for selected items, inspection or test result, production period, packaging configuration, or affected shipment.
Choose the narrowest useful traceability level. More data is not automatically better when fields are not controlled or retrievable.
Traceability matrix
Mark each field as required, conditional, or not needed for the order.
| Product identity | Part number, drawing and BOM revision, configuration, authorized deviation, lot, batch, unit or sample identifier, and quantity. |
|---|---|
| Material and process | Selected component lot or source, cable or wire identity, tool or fixture reference, process period, supplier-coordinated item, and change status. |
| Verification | Inspection record, test method and program, result, equipment or fixture reference, sample frequency, failure and retest disposition. |
| Delivery link | Label, package and carton identifiers, packing list, shipment or order reference, destination, record delivery, retention, and retrieval location. |
Choose lot or unit level deliberately
Lot-level records group assemblies made under a defined common condition. Define what starts and ends a lot and how material, revision, setup, time, or order changes affect it. Unit-level records require a unique identifier and a reliable way to link each unit to its result.
Do not print unique labels without establishing how uniqueness, verification, replacement, and record lookup are controlled.
Plan the record flow
Trace the identifier through each required handoff.
- Receiving and kitting for selected components or materials.
- Production traveler or electronic record with part, revision, quantity, and process status.
- Inspection and test records linked to lot, sample, or unit as specified.
- Label and package verification, packing list or shipment link, and delivery of requested records.
Test retrieval before production
Use a sample identifier to retrieve the intended product revision, material or process information, inspection and test evidence, package, and shipment fields. Check access, file naming, data entry, scans, and exception handling.
Include correction rules so a damaged label, entry error, split lot, rework, or retest does not break the link or erase the original record.
Common traceability mistakes
Avoid asking for full traceability without defining the fields and level, combining different revisions under one lot, collecting component data that cannot be linked to the finished assembly, or delivering a certificate with no path to the underlying record.
Keep retention and record-delivery expectations tied to the order and applicable agreement; do not assume one period or format fits every program.