CT protocol

Hi
I implemented Electronic Batch Recording system for API
Also going for Computer systems validation as per GAMP

The problem here is, Client is asking to submit “COMMISSIONING TEST PROTOCOL (CTP)”, which i not even heard.

Can any one please suggest me:

what actually a CTP is?

At what stage of validation it required?

what is the difference between IQ and CTP?

What does a CTP should contain