I am having problems with processing an Idoc using the same Message Type (Z2MMMATMASZ001).
Error message: Message type Z2MMMATMASZ001 is already being processed.
I noticed in transaction WE02 that there are Idocs that have a status yellow ( IDoc ready for dispatch (ALE service) ). Does this idocs are causing the problem? or what problem is it with this error message?
Thank You in Advance. Happy New Year!