Supplier performance measures should reflect the requirement the supplier agreed to meet. Delivery timeliness, conformity and response quality can reveal different problems and should not be collapsed into an unexplained total score.
Define the measure, period and exclusions before comparing suppliers. Link failures to order or lot records and distinguish supplier causes from changes made by the buyer. Discuss material differences using evidence both parties can review.
Agree on corrective actions and follow up on their effect. Use the review to decide where development, more control or an alternative source is needed. Avoid rewarding a low price when repeated failures increase the total operating cost.
Open Sources Used
This page uses open and institutional references as a frame; the final decision still belongs to the company record, threshold and owner.
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Reading adjacent decision areas keeps the topic from becoming an isolated note.