BR-18
This id stands for 2 different rules, one per rule set below: Factur-X numbers its rules in each profile separately.
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.
The Seller tax representative name (BT-62) shall be provided in the Invoice, if the Seller (BG-4) has a Seller tax representative party (BG-11)
cac:TaxRepresentativeParty
normalize-space(cac:PartyName/cbc:Name) != ''
Checked with EN 16931 Invoice (UBL), EN 16931 Credit Note (UBL), Croatia eRačun Invoice (UBL), Croatia eRačun Credit Note (UBL)
The Seller tax representative name (BT-62) shall be provided in the Invoice, if the Seller (BG-4) has a Seller tax representative party (BG-11).
//ram:SellerTaxRepresentativeTradeParty
normalize-space(ram:Name) != ''
Checked with EN 16931 Invoice (CII)
The Seller tax representative name (BT-62) shall be provided in the Invoice, if the Seller (BG-4) has a Seller tax representative party (BG-11)
cac:TaxRepresentativeParty
(cac:PartyName/cbc:Name) != ''
Checked with Romania RO e-Factura Invoice (UBL), Romania RO e-Factura Credit Note (UBL)