CL-03-OM-2] - Invoice transaction type (BTOM-001) must indicate either a Full Tax Invoice (bit 1) or a Simplified Invoice (bit 2).
CL-03-OM-2
cbc:InvoiceTypeCode[@name] | cbc:CreditNoteTypeCode[@name]
substring($t,1,1)='1' or substring($t,2,1)='1'