Solution : https://service.sap.com/sap/support/notes/162506 (SAP Service marketplace login required)
Key words :
optioal pass valuei_zlsch t052-zlsch xi_zschf t052-zschf, optional pass valuei_bldat bkpf-bldat sy-datlo, pass valuee_zlsch t052-zlsche_zschf t052-zschf5, additional key words fb01, changed function module parameters, enter function module, entire solution requires, reference type default, payment key, default values
Related Notes :
| 217021 | FB02: Manually set payment block overwritten |
| 187506 | FB01: manually entered cash dscnt terms overwritten |
| 175163 | FB01: Paymt block changed manually not transferred |