Dear Amit,
> Can't we use --replication-slot=name to avoid this ERROR? I mean use
> different replication slot names.
Are you saying the below case, right? It can work.
```
$ pg_createsubscriber -D data_sta/ -P 'user=postgres port=5432' -d postgres --subscription sub --replication-slot=slot1
-dtestdb --subscription sub --replication-slot=slot2 -U postgres
```
BTW; slot creations are tried before the standby promotes, thus there may be a chance
user read the error message, change the subscription name, and retry. But I still
think we should guard the combination, which means it's too late for PG19.
Best regards,
Hayato Kuroda
FUJITSU LIMITED