Identify the surface being marked
A part may have several levels or curved regions. Show which surface carries the identifier and its relationship to the locating features. The overall part height alone may not describe the relevant geometry. If several versions share a fixture, identify the height or feature differences between them so setup instructions can distinguish each version.
Control setup changes
Changing a part, fixture or head position should be treated as a setup change. Agree on what must be checked before processing resumes. The supplier’s equipment instructions govern operation; a customer should not prescribe generic focus distances or operating parameters from an online example. Instead, define the finished mark that the setup must produce.
Keep the acceptance method consistent
A useful first-piece review covers content, location and legibility on the actual surface. If a code is involved, include the required reading or verification conditions. Keep the accepted setup tied to the part revision and fixture. This makes a later reorder easier to review and helps avoid confusing one product configuration with another that happens to look similar.