Reference · EN 16931 · BR-CO
BR-CO-20 — EN 16931 business rule
BR-CO-20 is one of the EN 16931 business rules published by CEN/TC 434, part of the BR-CO — Conditions and calculations 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-CO-20
If Invoice line period (BG-26) is used, the Invoice line period start date (BT-134) or the Invoice line period end date (BT-135) shall be filled, or both.
Terms: BG-26, BT-134, BT-135
Location: cac:InvoiceLine/cac:InvoicePeriod | cac:CreditNoteLine/cac:InvoicePeriod
What this does not cover
This page states what the rules say. To check a document against them, use the free EN 16931 validator.