https://userapps.support.sap.com/sap/support/knowledge/en/3572350
3572350 - How to fill XREF1, XREF2 and/ or XREF3 values for FI documents posted by Logistical...
You post a FI document via MIRO and documents do not contain XREF1, XREF2 or XREF3 values filled.
https://userapps.support.sap.com/sap/support/knowledge/en/2553599
2553599 - FB01 - XREF3 field is not displayed for Brazilian company code | SAP Knowledge Base...
When trying to post a document through FB01 for a Brazilian company code the field reference_key3 "XREF3" is not available.
https://userapps.support.sap.com/sap/support/knowledge/en/2945995
2945995 - XREF1, XREF2 and XREF3 are not updated/filled after bank statement file return is...
Fields BSEG-XREF1, BSEG-XREF2, and BSEG-XREF3 are not updated after upload bank statment file at Brazilian scenarios.