While creating Quality Assurance plans and selecting Manufacturing record book requirements.
Generally, COC is kept. It's a kind of undertaking. It is having Quality Head Signatures. Purchase Orders also ask for COC as a must document.
My thoughts are that CoCs are CYA while CoAs are for when the organization wants to be able to track specific variables, and perhaps make process adjustments accordingly. Just because something is in spec/compliance doesn't mean it won't impact variability.
That is correct, they are usually required for border crossing. A certificate of origin is also one that is generally required for border crossing. I have used the certificate of conformance as a supplement to the certificate of analysis, as one is only a signed statement and the other shows the result, specification, etc. It would be good if your system could print both at the same time, rather than requiring you to print one or the other. Hopefully that is something that can be fixed by IT.
Best of luck,
For our company, the COA is lot/batch/shipment specific, while the COC is more broad that the company or site meets certain requirements that don't need spelled out on every single COA.
Hope that helps.