[ibr-088]-Unit code of price base quantity (ibt-150) MUST be same as invoiced quantity (ibt-130).
ibr-088
cac:Price/cbc:BaseQuantity[@unitCode]
not(../../cbc:InvoicedQuantity or ../../cbc:CreditedQuantity) or (@unitCode = ../../cbc:InvoicedQuantity/@unitCode) or (@unitCode = ../../cbc:CreditedQuantity/@unitCode)