VRBL-INV-MX-1p0-26

Basic Info

Rule	When the Invoice Period is Bimonthly, the Seller Tax Scheme ID must be 'VRBL:MX:621'.
Context	`/ubl:Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyTaxScheme/cac:TaxScheme/cbc:ID`
Pattern	vrbl-invoice-mx-1p0
Severity	fatal

Implementation

not(
	number(substring(../../../../../cac:InvoicePeriod/cbc:EndDate, 6, 2))
	-
	number(substring(../../../../../cac:InvoicePeriod/cbc:StartDate, 6, 2)) 
	= 
	1
)
or
. = concat($VRBL-MX-Prefix, '621')