Hello,
I have almost the same problem, please i need to know if someone find the solution?
Manual clearing could be done when I try to post the items in FEBAN using the payment order number.
But FEBP give me the error F5 263 and it couldn't be done automatically.
The customizing was checked and I'm using algorithm 029 (payment order number).
String search also defined and activated (nothing happened)
Thank you!