Reference · EN 16931 · BR
BR-55 — EN 16931 business rule
BR-55 is one of the EN 16931 business rules published by CEN/TC 434, part of the BR — Core rules family. To check a document against it, use the free EN 16931 validator.
These are the EN 16931 business rules of this family, as published by CEN/TC 434 in the validation artefacts that accompany the standard. The wording here is the rule text itself, and it is never a paraphrase. The codes in parentheses are business terms (BT-) and business term groups (BG-), the semantic model's names for the fields a rule constrains, and the location given with each rule is where it is asserted in a UBL invoice.
BR-55
Each Preceding Invoice reference (BG-3) shall contain a Preceding Invoice reference (BT-25).
Terms: BG-3, BT-25
Location: cac:BillingReference
What this does not cover
This page states what the rules say. To check a document against them, use the free EN 16931 validator.