Oversized documentation, incomplete supplier qualification, unproven cleaning: the same findings keep coming back.
Cosmetic good manufacturing practice does not require a complex system, but a controlled one. The most common mistake is producing bulky documentation nobody uses.
Next comes supplier qualification, often reduced to a technical data sheet. Without periodic evaluation and clear acceptance criteria, material control stays theoretical.
Finally, cleaning: plans exist but proof of execution is missing. That is precisely what the auditor will ask for.