Which supplier defect should you fix first?

Make the defect records comparable

Give each observable defect a stable code, definition, photograph and agreed detection method. Record the product revision, batch, inspection stage, units checked and affected units. Keep suspected causes separate from defect names: a loose joint is an observation; poor curing is a hypothesis. Apply the same definitions to factory inspections, goods-in checks and customer returns.

Choose a common review period and compare like products and inspection coverage. Separate defect occurrences from affected units, because a unit can have several faults. Link repeat observations of the same fault on the same unit so they are not counted again. Keep unverified complaints visible but separate from confirmed defects. Use recurring defect management for the wider supplier follow-up.

Keep the rankings separate

Prepare separate views using the same defect codes. Show the underlying evidence and missing information beside each ranking. Raw counts can reflect order volume or inspection intensity rather than poorer production. Compare affected units with units examined where the detection methods are comparable; customer complaints alone do not establish the defect rate across all supplied goods.

Separate recorded loss from assumptions

Attach invoices, credit notes, scrap records and recorded labour time to the relevant defect code. State the basis for valuing labour. Show gross loss and supplier recoveries separately, with the net recorded cost alongside them. Do not count both a write-off and the full replacement value where they represent the same loss. Mark estimates and unallocated shared costs explicitly.

Keep total recorded cost separate from cost per affected unit. A frequent cosmetic fault may create the largest total rework bill, while a less frequent functional fault costs more whenever it occurs. Missing cost evidence means unknown, not free. See measuring supplier quality costs for the underlying cost records.

Put safety concerns on an immediate track

UK government guidance says businesses must not sell consumer products they know, or should have known, are unsafe. As a practical precaution, isolate suspect stock and ask your product safety lead to assess the possible harm and affected batches. Do not wait for a cost ranking or another complaint before escalating a credible concern.

A small occurrence count does not make a dangerous failure minor. Describe who could be harmed, how the failure could cause harm, the potential severity and what remains uncertain. Inspection labels such as major or minor are not a substitute for this assessment. For goods already supplied, use the product recall guide to plan the response.

Agree the first supplier improvement

After urgent safety containment is under way, select a recurring defect with substantial documented loss and an action whose effect you can verify. If occurrence and cost rankings disagree, record why the chosen problem takes priority. Consider the extent of affected stock, operational disruption, evidence confidence and whether the supplier can investigate promptly. Keep other concerns assigned rather than hiding them in a combined score.

Send the supplier the defect definition, batch evidence, separate rankings, chosen priority, containment request, investigation owner and agreed review date. Define the next production check using the same coding and detection method, and require evidence that the change reduced recurrence without introducing another fault. Cambridge China Bridge can help coordinate factory follow-up through its own staff in China. Use corrective action after inspection failure for the action and verification process.