Error on hub queue "Subscribe error: replacing current subscriber not permitted, denying request"

Document ID : KB000046512
Last Modified Date : 14/02/2018
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Issue: 

 Certain queues are not connecting and we see the following in the hub.log

"Subscribe error: replacing current subscriber not permitted, denying request"

 

Environment:  

 hub 7.x and above

 

Cause: 

 Two hub's are trying to subscribe to the same queue. For example two get queues are trying to connect to the same attach queue.

 

Resolution:

 Get/Attach queues have a one to one relationship. You will need to disable the extraneous get queue to resolve this problem.

 

Additional Information:

 Hub to Hub Queues