Identify the final inspection point
List all operations that occur after marking. A later coating may affect visibility, while assembly may block access to the identifier. The relevant approval point is the condition in which the customer receives or uses the part. Identify which supplier owns each step so that inspection does not fall between two purchase orders.
Resolve drawing conflicts early
One note may specify a mark on the finished surface while another limits changes to that finish. Do not leave the conflict for an operator to interpret. Ask the design authority to resolve it and retain the answer with the order. When an approved deviation is needed, state its scope and whether it applies to a single lot or future production.
Trial the sequence, not just the machine
Use representative parts and carry samples through the planned downstream steps. Record the material, finish, artwork and operation order. If a supplier or process changes later, review whether the accepted sample still represents production. This approach can prevent a mark that looked acceptable at one stage from becoming unsuitable at final inspection.