Automatic Payment Transaction Posting Problem

Dear Experts,

I had a problem while posting the vendor payments through the txn "F110" (Automatic Payment Program).

I have created the parameters and proposals for the couple of open items.

After that I could found the open items in the exceptional list with the error code as "33" and

error message as "Unconfirmed change to master record".

So please assist me to do the postings through the txn "F110".

Note : But I can do the manual postings for the different open items through the txn "F-53".

Best regards,

Kesava balaji.