Unfortunately it's the data in SMQ1 which causes the trouble.
Now what you have to do is:
- clear the setup tables for application 11 (if there is data in the setup tables)
- in SMQ1, open the queue for the datasource you are now having trouble with (2lis_11_vaitm) (double click the queue name, and then double click the queue name again)
- you will see all posted transactions in the queue: several of them are probably posted AFTER your enhancement (use the import date & time of your transport as a reference), and some of them are posted before the enhancement.
- all entries which have been posted before the enhancement should be deleted in the queue: select them and then delete (shift+F2)
Do this until no entries exist with a creation date and time BEFORE the enhancement.
This is not difficult to do, BUT:
as you remove records, they will not appear in BW. So you will be missing data.
This means you will have to do repair loads for the deleted data.
If you double-click the column TID, you can see the content of the qRFC in question. There you will also find the sales document etc.
But this is a lot of work if there is a lot of data in your queue.