SAP Note 10770 - Automatic payment program.

Symptom

Items are not paid by the payment program (SAPF110S), possible
error messages in the payment proposal list are:
FZ506 No valid payment method found
FZ507 Error while creating payment document, read job log - or -
Item not selected but customer thinks it is due.

Cause and prerequisites

Many combinations are possible. The additional log must be consulted
to analyze this.

Solution
Delete proposal.
Edit; Parameters; Maintain parameters.
Edit; Additional log
Depending on the error message, activate additional log for
- due date determination
- payment method selection
- payment document item
for the appropriate customer or vendor.

Then reschedule the proposal and display/print the log.

The problem must be explained in the additional log.

Key word: F110