Define function and service condition
The conversation should begin with the part's function, the equipment where it operates, its interfaces, and the observed condition. Naming the part alone does not define a sufficient specification.
Control drawing, material, and revision
Drawings, dimensions, tolerances, material, and document revision should come from an approved source. If a conflict exists, the public value remains pending Engineering review.
Agree inspection and traceability
Before manufacturing, agree on the records and inspections that will demonstrate conformity. The specific scope depends on the part and requires technical and commercial validation.