How to fix 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).
What this rule checks
When the invoice covers a specific period (e.g. a monthly subscription), the end date cannot be before the start date as that would be logically invalid.
Referenced business terms
This rule references the following EN 16931 business terms. Click through for the full definition, the UBL XPath and the cardinality.
How to fix it
Ensure cbc:EndDate is equal to or later than cbc:StartDate inside cac:InvoicePeriod at the document level. Dates must be in YYYY-MM-DD format.
Related rules
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