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Subject: Draft 4 of UBL 2 Invoice Calculation Model Rules
Draft 4 of UBL 2 Invoice Calculation Model Rules The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119. http://www.ietf.org/rfc/rfc2119.txt ------- U2ICMDraft4Rule1: "To be a conforming UBL 2 invoice the document MUST be valid according to a standard UBL 2 Invoice schema." [A prerequisite to the following rules is that all amounts concerned are expressed in the same currency.] U2ICMDraft4Rule2: "The 'LineExtensionAmount' in the invoice 'LegalMonetaryTotal' SHOULD equal the sum of all 'LineExtensionAmount's in all of the invoice lines." U2ICMDraft4Rule3: "The 'TaxExclusiveAmount' in the invoice 'LegalMonetaryTotal' SHOULD equal the sum of the 'LineExtensionAmount's in all of the invoice lines plus the sum of the invoice 'AllowanceCharge' charges minus the sum of the invoice 'AllowanceCharge' allowances (with the exception of there being no 'TaxExclusiveAmount' in the invoice 'LegalMonetaryTotal')." U2ICMDraft4Rule4: "The 'AllowanceTotalAmount' in the invoice 'LegalMonetaryTotal' SHOULD equal the sum of any invoice 'AllowanceCharge' allowances." U2ICMDraft4Rule5: "The 'ChargeTotalAmount' in the invoice 'LegalMonetaryTotal' SHOULD equal the sum of any invoice 'AllowanceCharge' charges." U2ICMDraft4Rule6: "The 'LineExtensionAmount' in the invoice 'LegalMonetaryTotal' SHOULD equal the 'TaxExclusiveAmount' plus any 'AllowanceTotalAmount' minus any 'ChargeTotalAmount' (in the invoice 'LegalMonetaryTotal'), (with the exception of there being no 'TaxExclusiveAmount' in the invoice 'LegalMonetaryTotal')." U2ICMDraft4Rule7: "Any 'TaxInclusiveAmount' in the invoice 'LegalMonetaryTotal' SHOULD be equal to the 'TaxExclusiveAmount' (in the invoice 'LegalMonetaryTotal') plus the sum of any invoice total tax amounts (at invoice document level) (with the exception of there being tax amounts in currencies other than the currency of the invoice totals or there being is no 'TaxExclusiveAmount' in the invoice 'LegalMonetaryTotal')." U2ICMDraft4Rule8: "The 'PayableAmount' in the invoice 'LegalMonetaryTotal' SHOULD be equal to any 'TaxInclusiveAmount' (in the invoice 'LegalMonetaryTotal') minus any 'PrepaidAmount' (in the invoice 'LegalMonetaryTotal') unless there is no 'TaxInclusiveAmount' in which case the 'PayableAmount' SHOULD equal the 'TaxExclusiveAmount' (with the exception of there being no 'TaxExclusiveAmount' in the invoice 'LegalMonetaryTotal')." U2ICMDraft4Rule9: "The sum of any invoice document level tax total amounts SHOULD equal the sum of any document level subtotal tax amounts (with the exception of there being tax amounts in currencies other than the currency of the invoice totals)." ------ Stephen D Green
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