# BR-CO-13-GST-SG

Source: https://xmlvalid.com/rules/BR-CO-13-GST-SG

> Invoice total amount without GST (BT-109-GST) = Σ Invoice line net amount (BT-131) - Sum of allowances on document level (BT-107) + Sum of charges on document level (BT-108).

- Level: error
- Rule sets: PINT SG rules (Singapore) 1.4.1
- Context: `cac:LegalMonetaryTotal`
- Test: `((cbc:ChargeTotalAmount) and (cbc:AllowanceTotalAmount) and (round(xs:decimal(cbc:TaxExclusiveAmount) * 10 * 10) div 100 = round((xs:decimal(cbc:LineExtensionAmount) + xs:decimal(cbc:ChargeTotalAmount) - xs:decimal(cbc:AllowanceTotalAmount)) * 10 * 10) div 100 )) or (not(cbc:ChargeTotalAmount) and (cbc:AllowanceTotalAmount) and (round(xs:decimal(cbc:TaxExclusiveAmount) * 10 * 10) div 100 = round((xs:decimal(cbc:LineExtensionAmount) - xs:decimal(cbc:AllowanceTotalAmount)) * 10 * 10 ) div 100)) or ((cbc:ChargeTotalAmount) and not(cbc:AllowanceTotalAmount) and (round(xs:decimal(cbc:TaxExclusiveAmount) * 10 * 10) div 100 = round((xs:decimal(cbc:LineExtensionAmount) + xs:decimal(cbc:ChargeTotalAmount)) * 10 * 10 ) div 100)) or (not(cbc:ChargeTotalAmount) and not(cbc:AllowanceTotalAmount) and (xs:decimal(cbc:TaxExclusiveAmount) = xs:decimal(cbc:LineExtensionAmount)))`

Validate a document against these rules: https://xmlvalid.com/validate