There is the outstanding question as to how many secrets may be held inside a Vault in CA PAM 4.1.X
CA PAM 4.1.1 and 4.1.2, possibly more recent versions as well
As of the writing of this article (March 2023) the maximum number of secrets per vault is 100
This is a hardcoded-non configurable- value which works for CA PAM versions having Secrets Management capabilities so far.
This may change in the future, so in case of doubt, please check with Broadcom Support.