ORA-12452
The OLS label tag label_tag is already mapped to another label.
- label_tag: The label tag provided to create a new OLS label.
Cause
The Oracle Label Security (OLS) label tag value entered was already in use by another OLS label.
Action
Review the existing labels and label tags for the OLS policy in DBA_SA_LABELS view. Use an unused label tag for your new label.