ORA-42921
Creating new audit policies for OLS can only be done using Unified Auditing.
Cause
This is an attempt to create a new Oracle Label Security (OLS) audit configuration using a desupported API.
Action
Use Unified Auditing to create audit policies and configurations for OLS auditing. Refer to Oracle Database documentation for more information on Unified Auditing for OLS and for more information about Unified Auditing in general.