3311 (0CEF) (RC2432): MQRCCF_SUB_ALREADY_EXISTS

Explanation

When processing a Copy or Create Subscription command, the target Subscription identifier exists.

Programmer response

If you are trying to copy an existing subscription, ensure that the ToSubscriptionName parameter contains a unique value. If you are trying to create a Subscription ensure that the combination of the SubName parameter, and TopicObject parameter or TopicString parameter are unique.