# PEPPOL-T19-R001

Source: https://xmlvalid.com/rules/PEPPOL-T19-R001

> A validity period end date SHALL be later or equal to a validity period start date

- Level: error
- Rule sets: Peppol Catalogue rules 3.5
- Context: `/ubl:Catalogue/cac:ValidityPeriod`
- Test: `$CatalogueValidityEnd >= $CatalogueValidityStart`

Validate a document against these rules: https://xmlvalid.com/validate