Message

[BR-18]-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)

Context
cac:TaxRepresentativeParty
Test
normalize-space(cac:PartyName/cbc:Name) != ''
Usage
/ ubl:Invoice / cac:TaxRepresentativeParty / cac:PartyName / cbc:Name