BR-FXEXT-BR-22
Each invoice line item "INVOICE LINE" (BG-25) must contain the quantity of goods or services invoiced in the relevant line item as a line item "Invoiced quantity" (BT-129) if the "Subtype of invoice line item" (BT-X-8) has the value "Normal line item (standard case)" (DETAIL) or is not specified.
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
//ram:IncludedSupplyChainTradeLineItem/ram:AssociatedDocumentLineDocument[not(ram:LineStatusReasonCode) or ram:LineStatusReasonCode = 'DETAIL'](../ram:SpecifiedLineTradeDelivery/ram:BilledQuantity)Checked with France Factur-X EXTENDED, Factur-X / ZUGFeRD EXTENDED