we've a strange issue with a ABAP Outbound proxy we've generated in our CRM 5.0 system (asynchronous interface).
Sometimes messages stuck in the CRM system. They are in status 'Scheduled' (green flag) in SXMB_MONI in the CRM system. When I have a look at the corresponding queue, there's no message within. Status in SMQ1 and SMQ2 is fine, too. All queues are registered. When I reprocess such a message manually in SXMB_MONI in CRM with the restart button, they're sent fine to XI.
Please note: it's NOT a general issue with that outbound proxy. In most cases the messages are sent immediately, just in some cases the messages stuck and I don't know why.
Is it possible to restart such messages automatically? I just know the report RSXMB_RESTART_MESSAGES, but that one just restarts messages in Error status. But the ones we have aren't in error status so they cannot be selected with that report.
Any idea where could be the problem / we should check?