Solution : https://service.sap.com/sap/support/notes/946568 (SAP Service marketplace login required)
Summary :
When transferring vendor billing documents to FI, an error FF804 stating "KNUMH is empty" can occur under the tax bypass condition. The issue occurs due to incorrect settings in the FI system, as specified in SAP Note 946093. To resolve, access Transaction SE37, navigate to the WLF_ACCOUNTING_DOCUMENT_CREATE function module, and modify under the CHANGING tab: add parameter "C_MBEW_UPDATE" with TYPE specification "xfeld", setting it as optional. This adjustment must be applied manually in earlier SAP releases to facilitate successful document processing. Affected transactions include WLF1 and WLF2.
Key words :
transfer vendor billing documents, enter function module wlf_acoounting_document_creatego, prerequisites note 946093 solution, call transaction se37, error occurs, tax bypass, error message, terms wlf1, wlf2 reason, change manually
Related Notes :
| 946093 | Activating the tax bypass for AWTYP = WBRK |