A defect does not disappear because a factory says it has been fixed. A scratch may be polished, a label replaced, a component removed and reinstalled, a pack reworked, a test rerun, or a unit sorted and repaired. Some work may restore the product to the original approved requirement. Other work may alter material, process, performance, appearance, traceability, warranty, safety, or compliance. A buyer needs a controlled record before a supplier starts work, not a short message after the goods are packed.
China supplier rework authorization is a buyer-supplier control that documents a proposed operation on identified nonconforming goods before the supplier performs it. It links the issue, product revision, lot or quantity, location, proposed instruction, authorization owner, actual work, verification evidence, and disposition. It does not decide whether rework is technically safe, legally permitted, compliant, suitable for a regulated product, or acceptable for release.
Current 21 CFR 211.115 requires written procedures for reprocessing pharmaceutical batches that do not conform to standards or specifications and requires quality control review and approval.1 Current 21 CFR Part 820 defines rework, in the medical-device QMSR context, as action taken on a nonconforming product so it fulfills specified requirements before distribution.2 FDA states that its QMSR applies to finished-device manufacturers and, effective February 2, 2026, incorporates ISO 13485:2016 by reference.3 These sources do not create a general rework rule for China suppliers. They support a limited buyer practice: identify the affected goods, state the approved requirement, require a written proposed operation, authorize the work through the correct owner, and ask for verification evidence after work is complete.
Separate rework from other supplier actions
The word “rework” is often used loosely. A supplier may use it for cosmetic repair, replacement of a part, sorting, a process adjustment, reassembly, relabeling, repacking, retesting, or a change to product characteristics. Buyers should not decide the technical category by word choice alone. Ask what the supplier will physically do, which goods it will affect, and which original requirement it intends to meet.
| Supplier term | Practical buyer question | Record to link |
|---|---|---|
| Rework | What operation will restore the product to the existing approved requirement? | Rework request and verification record |
| Repair | Does the action restore the original requirement or create a different condition? | Technical review and buyer decision path |
| Reprocessing | Is the supplier repeating a process or batch step? | Process instruction, affected scope, and qualified review |
| Sorting | Is the supplier separating conforming and nonconforming units without changing them? | Sorting criteria, lot record, and count reconciliation |
| Replacement | Which component will be removed and installed, and is it approved? | Component traceability and change record |
| Concession or deviation | Is the supplier asking to accept a condition outside the approved requirement? | Deviation request, buyer authority, and stated conditions |
| Change | Will the work alter a drawing, material, process, label, test method, or approved record? | Change-control process and impact review |
A unit can require more than one record. A nonconformance may trigger a rework request, while an unapproved alternate component requires change control. A rework instruction may also need an operator qualification check, tooling record, line clearance, and inspection evidence. Keep the records distinct but cross-referenced.
Quarantine and identify the scope before deciding
The supplier should identify and control the affected goods before work begins. At minimum, ask for product name, SKU, revision, lot or order, quantity, location, defect description, discovery point, current status, and linked nonconformance or inspection record. If the scope is uncertain, state the uncertainty rather than assuming that only the visible units are affected.
| Scope field | What supplier should state | Why it matters |
|---|---|---|
| Product baseline | SKU, drawing, approved sample, and revision | Shows the original requirement |
| Affected goods | Lot, quantity, carton, pallet, serial, or other identifier | Prevents rework from spreading to unknown goods |
| Location and status | Line, warehouse, quarantine area, work-in-process, or packed goods | Helps prevent accidental release or mixing |
| Issue description | Observed condition and source record | Separates fact from the supplier’s explanation |
| Discovery point | Incoming check, in-process check, final inspection, customer return, or other point | Provides context without assigning cause |
| Current disposition | Held, segregated, awaiting review, sorted, or other controlled status | Makes clear whether work has already occurred |
If the supplier has already started work for emergency containment or to protect people or property, it should record what occurred, why, affected scope, and remaining decisions. A buyer should not direct a supplier to delay safety action while waiting for commercial authorization.
Require a written rework proposal
A supplier proposal should explain what will happen to each affected unit. It should use the current approved product requirement as the reference, not an informal promise that the result will be “good.” The proposal can be short for a low-risk defined action, but it must identify the operation, instruction, tools or materials, who will perform the work, and how the supplier will determine whether the result meets the applicable requirement.
Section 211.115 calls for written procedures and quality-control approval for pharmaceutical reprocessing.1 In a buyer context, use that principle as a discipline, not a copied regulation. Ask for the supplier’s written rework instruction or a controlled work step that says what will be done and how the supplier will verify it.
| Proposal element | Buyer request | Reason for review |
|---|---|---|
| Original requirement | Drawing, specification, sample, artwork, or acceptance criterion | Defines what the supplier says it will restore |
| Proposed operation | Step-by-step action in supplier’s controlled record | Reveals whether this is rework, repair, or a change |
| Materials and components | Approved replacement component, consumable, label, or adhesive | Identifies hidden substitutions |
| Tools and equipment | Tool ID, machine, gauge, or fixture when relevant | Links work to the operating method |
| Roles | Supplier quality, production, engineering, or trained operator role | Identifies responsibility without exposing personal data |
| Affected scope | Lot, count, location, and unit IDs if used | Keeps the operation bounded |
| Verification plan | Inspection, test, visual check, record review, or other stated method | Shows how the supplier will check the result |
| Traceability output | New record, relabel, count, or lot link | Preserves the history of the affected goods |
Do not approve a proposal that says only “rework and reinspect.” Ask what operation will be performed, which specification applies, and what evidence will be returned. The buyer may still need qualified engineering, quality, safety, or regulatory review before any authorization.
Assign authority before the work begins
The supplier should know who may authorize the proposed operation. The buyer may require supplier quality approval, buyer quality review, engineering signoff, a named product owner, or a combination based on the product and contract. State this in advance. An individual who attends a meeting or replies “received” has not necessarily approved rework.
| Decision type | Appropriate route | Meeting limitation |
|---|---|---|
| Supplier internal process action | Supplier’s defined quality or production authority | Buyer may request evidence but does not manage factory procedures |
| Buyer-specification rework | Buyer owner named in agreement or control plan | Do not infer authority from job title alone |
| Technical fitness decision | Qualified engineering or product owner | Sourcing staff should not substitute a technical decision |
| Regulatory or safety question | Qualified regulatory, safety, legal, or product owner | Do not use general sourcing guidance as a determination |
| Deviation from approved requirement | Authorized deviation or concession process | Rework request alone does not grant a deviation |
| Shipment release | Separate buyer release process | Rework authorization does not release a shipment |
The authorization should list the product and scope, approved instruction, conditions, required evidence, and expiry if the approval is limited to one lot or time period. It should also state what happens if the supplier discovers a different defect, needs a different material, or cannot follow the stated work instruction.
Control execution and preserve traceability
During rework, the supplier should prevent affected goods from mixing with unaffected goods. Ask it to retain the original lot or unit link, record the count received for rework, count completed units, count scrapped units, count units still on hold, and state whether replacement parts or labels were used. The buyer does not need to dictate a factory’s internal layout, but it should receive enough information to reconcile the outcome.
| Execution record | Minimum content |
|---|---|
| Start authorization | Request ID, owner, date, scope, and approved instruction |
| Input count | Quantity and identification of goods entering rework |
| Work record | Date, location, role, instruction revision, and actual operation |
| Replacement material record | Component or label ID, source, and lot if applicable |
| Output count | Completed, scrapped, held, and remaining quantities |
| Traceability link | Lot, carton, serial, pallet, or other buyer-defined identifier |
| Deviation during work | Unexpected condition, changed instruction, or expanded scope |
| Verification record | Method, result, scope, reviewer, and linked source evidence |
A count reconciliation can surface a missing unit or a scope expansion. It does not by itself establish that reworked goods meet requirements. The verification record must answer that separate question.
Define verification before the supplier performs rework
Verification should be tied to the original requirement and the proposed operation. A visual cosmetic repair may require an approved appearance reference. A component replacement may require correct component identity, installation confirmation, and applicable functional or dimensional review. A label rework may require the current approved artwork, placement check, barcode review, and quantity reconciliation. The right evidence depends on the product.
Current Part 820’s definition of rework refers to a nonconforming product fulfilling specified requirements before distribution in the medical-device context.2 That definition gives a useful general question: what specified requirement will the verification address? It does not tell a buyer which test, sample size, or acceptance decision applies to non-medical products.
| Rework example | Verification question | Possible evidence |
|---|---|---|
| Cosmetic surface rework | Does the unit match the agreed appearance reference? | Controlled visual standard, photos, and inspection record |
| Component replacement | Is the approved component installed and does the unit meet applicable checks? | Component ID, work record, and relevant inspection result |
| Label replacement | Is the current artwork, barcode, location, and lot code correct? | Artwork reference, scan or review record, and pack count |
| Packing rework | Does the unit use the approved packing instruction and contain required items? | Packing checklist, photos, and carton reconciliation |
| Process rerun | Did the supplier follow the approved procedure and record results? | Controlled instruction, process record, and qualified review |
| Sorting after defect | Are units separated against stated criteria and traced to the lot? | Sorting criteria, count, sample plan, and disposition record |
Do not treat a retest as proof that a different defect is resolved. The supplier should state which condition was verified and what the evidence does not cover.
Link rework to the original nonconformance and later actions
Rework corrects or attempts to correct an identified product condition. It does not automatically determine why the issue occurred or prevent recurrence. Link the rework record to the original inspection report, nonconformance record, defect photo evidence, lot record, and any corrective-action investigation. If the supplier changes the process, tooling, material, or design in response, create or reference a separate change record.
| Related record | Relationship to rework |
|---|---|
| Nonconformance | Identifies the observed issue and initial scope |
| Inspection report | Provides source results before or after rework |
| Deviation or concession | Controls acceptance outside the original requirement, if authorized |
| Change request | Controls any lasting material, process, tooling, or document modification |
| Corrective action | Addresses cause and recurrence after appropriate investigation |
| Lot traceability record | Connects reworked goods to production and shipment scope |
| Shipment handover record | Shows whether any reworked goods were released to the forwarder |
The buyer should avoid asking the supplier to rewrite the original record so the defect disappears. Preserve the original condition and the later action. A clear history is more useful than a perfect-looking file.
Supplier request wording and FAQ
Supplier shall hold and identify the affected goods pending Rework Request [ID]. Before starting work, provide product revision, lot or quantity scope, location, observed condition, source record, proposed rework instruction, materials or components, responsible supplier roles, verification plan, traceability method, and requested authorization. Do not begin a buyer-specification rework, substitution, or change without the stated authority. During execution, reconcile input, completed, scrapped, held, and remaining quantities. Submit verification evidence linked to the original approved requirement. Rework authorization does not approve a deviation, product release, shipment release, technical fitness, regulatory compliance, or final acceptance unless an authorized Buyer owner records a separate decision.
What is a supplier rework authorization?
It is a controlled approval record for a defined operation on identified nonconforming goods. It connects the issue, scope, original requirement, proposed work, authority, execution record, and verification evidence.
Is rework the same as accepting a defect?
No. Rework aims to restore the original approved requirement. Accepting a condition outside that requirement is a separate deviation or concession decision and should follow the applicable authorized process.
Can the supplier rework goods before asking the buyer?
The answer depends on the agreed supplier and buyer process, product risk, and urgency. The supplier may need to take immediate containment or safety action. Buyer-specification rework should follow the stated authorization path, with actual actions recorded if emergency work occurs.
What evidence should the buyer request after rework?
Request the approved instruction, scope and count reconciliation, traceability link, replacement-material record where applicable, verification method and result, source inspection records, and any unexpected deviation or change observed during work.
Keep repair work visible and verifiable
China supplier rework authorization helps buyers prevent silent changes to nonconforming goods. It starts with identified and held scope, uses a written proposed instruction, routes approval to the correct owner, records actual work and counts, and asks for verification against the original approved requirement.
Start with the next supplier request to repair a label, replace a component, rework packaging, or rerun a process. Require a one-page request before work begins and a linked verification packet after it ends. The record often makes clear whether the supplier restored a known requirement or needs a different controlled decision.
Supplier Ally can help buyers organize supplier nonconformance records, rework requests, evidence follow-up, lot traceability, inspection coordination, change records, and shipment documentation. For engineering, safety, legal, regulatory, medical, product-compliance, technical, or final acceptance decisions, use the appropriate qualified owner before acting.
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