In a CCA Blueprint, there is a tab "Discovery Verification Rules" that can contain Verification Directives.  Each directive is a check on the target machine if certain criteria is matched after the initial discovery method indicators are found

If there are several discovery verification rules defined, do they all need to be met before the rest of the blueprint is discovered?

Release:
Component: CAACM

All of the verification directives must to be met in order for the rest of the BP to be discovered

Documentation on Verification Rules
https://docops.ca.com/ca-configuration-automation/12-8-4/en/administrating/understand-and-create-rules/

How to Modify a CCA Blueprint to discover a newer version of a product
https://comm.support.ca.com/kb/how-to-modify-a-cca-blueprint-to-discover-a-newer-version-of-a-product/kb000118455