FX-SCH-A-000001
In order for the buyer to automatically identify a supplier, the Seller identifier (BT-29), the Seller legal registration identifier (BT-30) and/or the Seller VAT identifier (BT-31) shall be present.
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.
[BR-CO-26] In order for the buyer to automatically identify a supplier, the Seller identifier (BT-29), the Seller legal registration identifier (BT-30) and/or the Seller VAT identifier (BT-31) shall be present.
//ram:SellerTradeParty
(ram:ID) or (ram:GlobalID) or (ram:SpecifiedLegalOrganization/ram:ID) or (ram:SpecifiedTaxRegistration/ram:ID[@schemeID='VA'])
Checked with Factur-X / ZUGFeRD MINIMUM