ALTER AUDIT POLICY CIS_UNIFIED_AUDIT_POLICY ADD ACTIONS CREATE USER; results in ORA-46357: Audit policy CIS_UNIFIED_AUDIT_POLICY not found.

I received a list of items from a security scan that I need to implement.

Item: Ensure the 'CREATE USER' Action Audit Is Enabled        

Solution: ALTER AUDIT POLICY CIS_UNIFIED_AUDIT_POLICY ADD ACTIONS CREATE USER;    

Result: [Error] Execution (1: 1): ORA-46357: Audit policy CIS_UNIFIED_AUDIT_POLICY not found.

Note Provided: If you do not have CIS_UNIFIED_AUDIT_POLICY, please create one using the CREATE AUDIT POLICY statement.

Question: How to do as the Note suggests?

 There is additional list of items to implement after CREATE USER like,

ALTER AUDIT POLICY CIS_UNIFIED_AUDIT_POLICY ADD ACTIONS DROP USER;      

Note: Using Oracle 19C, non container db.