For security hardening purposes, the customer needs to know what is the basic list of ciphers that should not be removed on each server with a Change Auditor component so that it operates properly.
There is no official “hardcoded required cipher list” published by Quest for Change Auditor. Quest Change Auditor (QCA) relies on Windows (Schannel) + .NET/WCF for TLS negotiation. Therefore, the supported cipher list will be based on what the underlying OS supports and allows. The only explicit product requirement is that TLS 1.2 may be required, depending on the configuration of components like SQL (even though QCA supports TLS 1.3)