Thanks for your reply. We are on CL 6.1.1 and the Timeout Handling – Resend OB Messages is set by default when Await replies is set, which we had overlooked in the configuration. Seems to be behaving better now.
Has there been any update from Info regarding this issue? We are experiencing the same issue with one process. It appears to occur when one or more of the threads have pending transactions due to the destination connection is down or unresponsive.