How to fix BR-30
If both Invoice line period start date (BT-134) and Invoice line period end date (BT-135) are given then the Invoice line period end date (BT-135) shall be later or equal to the Invoice line period start date (BT-134).
What this rule checks
At the line level, when a service period is specified, the end date must be on or after the start date to represent a valid time span.
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:InvoiceLine → cac:InvoicePeriod. Dates must be in YYYY-MM-DD format.
Related rules
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