BR-29 - Invoicing period end must not precede its start
If both the invoicing period start date (BT-73) and end date (BT-74) are present, the end date must be later than or equal to the start date.
BR-29 - Invoicing period end must not precede its start
If both the invoicing period start date (BT-73) and end date (BT-74) are present, the end date must be later than or equal to the start date.
What this rule checks
If both the invoicing period start date (BT-73) and end date (BT-74) are present, the end date must be later than or equal to the start date.
How to fix it
Ensure BT-74 ≥ BT-73.
Validate against this rule
This rule is part of EN 16931. Check your invoice with the validator that matches your format:
Related rules
BR-CO-10Sum of line net amounts must equal the line totalBR-CO-13Total without VAT must reconcile lines, allowances and chargesBR-CO-15Total with VAT must equal total without VAT plus VATBR-CO-16Amount due must equal total with VAT minus prepaidBR-CO-11Sum of document-level allowancesBR-CO-12Sum of document-level charges
Source: CEN EN 16931 Schematron · Last verified: 2026-07-10
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