Message

[PEPPOL-T004-R032] MaximumVariantQuantity MUST be greater than 0 when VariantConstraintIndicator is set to true.

Context
ubl:CallForTenders/cac:TenderingTerms/cbc:VariantConstraintIndicator[normalize-space(.)='true']
Test
number(normalize-space(/ubl:CallForTenders/cac:TenderingTerms/cbc:MaximumVariantQuantity)) > 0
Usage
/ t004:CallForTenders / cac:TenderingTerms / cbc:MaximumVariantQuantity