Resolution:

You cannot use the same durable name with multiple durable subscribers even if they are running on different machines. For example, If your adapter service name is 'test', then the subscriber name will be 'testEndPoint' by default.

When you want to run two instances of the above durable subscriber, then you will need to change the subscriber name for one of the instances. Otherwise, your second subscription will not be able to start up. The names of all durable subscribers connecting to the same EMS server have to be unique, even if they are connecting to different topics