Hello,
it seems that you have reached a limit of 1000 of entities (Queues, in your case).
Each partitioned queue or topic counts toward the quota of 1,000 entities per namespace.
If called from the management API, the exception QuotaExceededException is received by the calling code.
You have all limits indicated here :
https://learn.microsoft.com/en-us/azure/service-bus-messaging/service-bus-quotas
Can you create a new namespace?
Regards,