2510 (09CE) (RC2510): MQRC_TOPIC_NOT_ALTERABLE
Explanation
An MQSUB call using option MQSO_ALTER was made changing the one or more of the fields in the MQSD that provide the topic being subscribed to. These fields are the ObjectName, ObjectString, or wildcard options. The topic subscribed to cannot be changed.
Completion code
MQCC_FAILED
Programmer response
Remove the subscription using MQCLOSE and re-create it with MQSUB with the attributes set correctly, or change the attributes and options used on the MQSUB call so that it matches the existing subscription.