VRBL-INV-EN16931-M-122

Basic Info

Rule If both Invoice Start Date and Invoice End Date are given then the Invoice End Date must be later or equal to the Invoice Start Date.
Context /ubl:Invoice/cac:InvoicePeriod
Pattern vrbl-invoice-en16931-ubl-model
Severity fatal

Used Template: EndDateEqualOrLaterStartDate

Parameter Value
StartDate = cbc:StartDate
EndDate = cbc:EndDate

Implementation

not(boolean(cbc:StartDate)) 
or 
not(boolean(cbc:EndDate))
or 
number(
	concat(
		substring(cbc:EndDate, 1, 4),
		substring(cbc:EndDate, 6, 2),
		substring(cbc:EndDate, 9, 2)
	)
)
>=
number(
	concat(
		substring(cbc:StartDate, 1, 4),
		substring(cbc:StartDate, 6, 2),
		substring(cbc:StartDate, 9, 2)
	)
)