How to clear document in F.13 after Document Splitting

Hello,

I am posting this after having searched on google and scn.

My problem is that I need to do the automatic clearing in Transaction F.13. However, some items are not cleared. I have the message:

Document splitting: Items for clearing 1100 /5000000000 /2014 /002 not found

By doing a research on this error, we found out that it occurred because this item was not posted with active document splitting.

Also please note that we have activated the New GL and document splitting, but not the migration plan.

The question is how to clear this document?

Thanks for your help.

Best Regards