3210 (0C8A) (RC3210): MQRCCF_OBJECT_OPEN_FORCE
Explanation
Object is in use, but could be changed specifying Force as MQFC_YES.
The object specified is in use. This could be because it is open through the API, or for certain parameter changes, because there are messages currently on the queue. The requested changes can be made by specifying Force as MQFC_YES on a Change command.
Programmer response
Wait until the object is not in use. Alternatively specify Force as MQFC_YES for a change command.