BR-54
Error (blocking) EN 16931 (UBL)EN 16931 (CII)
Official rule text
Each Item attribute (BG-32) shall contain an Item attribute name (BT-160) and an Item attribute value (BT-161).
Seeing BR-54 in a rejection?
Run your file through the free validator to see every violation at once — or let NormDrift watch your reference invoices so the next ruleset release never surprises you.