Goods issue posting was not performed yet in the ERP system

What causes this issue?

You want to reverse the goods issue for an outbound delivery. The ERP
system reports that the goods issue posting has not yet been processed
in the ERP system. The reason for this is that the message used to
report the goods issue posting to the ERP system has not yet been
processed in the ERP system. This could be caused by a high message
load leading to delayed message processing in the ERP syste,. This is
not normally critical. This means that if the goods issue message has
not yet been processed, the message for cancellation of the goods issue
will be placed in the same message queue after the original message,
and both messages will be automatically processed in the correct order
once the system is again able to process the queue.

System Response

In the check log for the delivery, this message only appears as
information. You can cancel the goods issue in EWM.

How to fix this error?

You do not need to do anything. This message is only information
to help give you a better overview of the situation.
If you subsequently want to post a goods issue for the same outbound
delivery and you notice that this posting does not arrive in the ERP
system, contact your system administrator.

Procedure for System Administrators

If the messages are not processed as expected in the ERP system, check
the qRFC Inbound Monitor to see whether errors are occurring in the
queues.

Error message extract from SAP system. Copyright SAP SE.