E-Invoice ValidatorBR-29
MistakeUBLCII
Official rules text
= xs:date(cbc:StartDate)) or not(exists(cbc:StartDate)) or not(exists(cbc:EndDate))">[BR-29]-If both Invoicing period start date (BT-73) and Invoicing period end date (BT-74) are given then the Invoicing period end date (BT-74) shall be later or equal to the Invoicing period start date (BT-73).
Rules and regulations
- EN 16931 (UBL) (validation-1.3.17)
- EN 16931 (CII) (validation-1.3.17)
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Official rule sets up to date: EN 16931 1.3.17 · Peppol BIS 3.0.20 · XRechnung 3.0.2 (KoSIT 2.6.0). Last checked against the sources on 12.10.2026.