RMAN-06216: warning: db_unique_name mismatch

DB 19.16

RMAN catalog 19.24

Hi,

We are running data guard, we take backup on both the primary and the standby. We are seeing this (on both sides):

RMAN-06216: warning: db_unique_name mismatch - 429 objects could not be updated
RMAN-06218: List of objects requiring same operation on database with db_unique_name DBSTBY1
RMAN-06211: ==========================
RMAN-06212: Object Type Filename/Handle
RMAN-06213: --------------- ---------------------------------------------------
RMAN-06214: Backup Piece al3avjba_73045_1_2

I have tried running crosscheck (and delete obsolite/expired) connected to the standby and catalog as well as the primary, it does not help.

Any ideas?

Regards

Rookie