SAP Message BON_ENH_MESS791 - Partial settlement not possible: there are open documents (doc &1)

Diagnosis
You tried to settle parts of an agreement for which there aresettlementdocuments that have not yet been transferred to FI (opendocuments). Theuser-specific settlement (with VAKEY) has been switchedon for the agreement.
To carry out a partial settlement the amount already paid for eachVAKEYis used. The payment amounts are not updated in the statisticsuntil the document has not been transferred to FI. The statistics arestill incomplete. The system cannot determine the correct value for thepayment.

System Response
The system does not allow a further partial settlement of theagreement.

Procedure
Transfer the open payment documents to FI before you make a furtherpayment.