3664702 - FISK_VAT - Document Number not reported into XML file for SD document

When extracting the XML from transaction FISK_VAT, it was identified that in some cases column F is incorrectly populated with the Assignment field (XBLNR) instead of the Document Number (BELNR).

In the FISK_VAT report, the documents display the correct document number.
However, in the XML, document number shows in "column F" the Assignment field value instead of the document number.
In certain cases the XML output incorrectly replaces the Document Number with the Assignment field.

• SAP_APPL 600
• SAP_APPL 602
• SAP_APPL 603
• SAP_APPL 604
• SAP_APPL 605
• SAP_APPL 606
• SAP_APPL 616
• SAP_FIN 617
• SAP_FIN 618
• SAP_FIN 700
• SAP_FIN 720
• SAP_FIN 730
• S4CORE 100
• S4CORE 101
• S4CORE 102
• S4CORE 103
• S4CORE 104
• S4CORE 105
• S4CORE 106
• S4CORE 107
• S4CORE 108
• S4CORE 109

BAdI FISK_VATCNTRL method MODIFY_VAT_LEDGER
XBLNR ZUONR BELNR Assignment document number reference 
SD billing document VF01 VF03 VBRK 
XML File column F wrong incorrect  , KBA , FI-LOC-FI-SK , Slovakia , Problem