Solution : https://service.sap.com/sap/support/notes/190879 (SAP Service marketplace login required)
Key words :
additional key words bseg-sgtxt, clearing document line, required entry field, bseg-zuonr, bseg-augbl = ' ', outgoing payment, incoming payment, assignment number, fdz1rf05a-stsim, prerequisites
Related Notes :
| 372858 | Clearing: Field HZUON not ready for input after simulation |
| 331202 | Required field check for automatically genrtd clearing items |