Define the decision
A sample defines the physical reference; a written specification defines what must be repeatable.
Products, Sourcing & Manufacturing
Samples, Specifications and Approvals: Three Controls That Prevent Expensive Sourcing Mistakes
A sample defines the physical reference; a written specification defines what must be repeatable.
Plan the work
Record who can approve changes to material, size, artwork or packaging.
Verify the result
Use sign-off before bulk work and a matching acceptance check before shipment.