Rule at a Glance
| ID | Severity | Context (XPath) |
|---|---|---|
| Series ref. BR-42 | Fatal (error) | cac:TaxRepresentativeParty |
Schematron ID: ibr-019 | Field: cac:PostalAddress (Seller tax representative postal address, IBG-12) |
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Classification
Contextual — this rule only fires when a cac:TaxRepresentativeParty block exists on the invoice. Most UAE domestic invoices, where the seller is its own VAT-registered entity, never trigger it.
What the Rule Is Checking
Where an invoice includes a Seller tax representative party — a third party that discharges VAT obligations on the seller's behalf in a jurisdiction where the seller has no direct establishment — that representative's block must carry a postal address, alongside the name requirement in the neighbouring rule ibr-018. A tax representative block with a name but no address fails this check.
Why This Rule Exists
A tax representative exists specifically because the seller lacks the local standing to discharge tax obligations directly. The representative's own address is what establishes their jurisdictional presence and is the address a tax authority would use to pursue enquiries or correspondence relating to that VAT obligation. Without it, the representative party block is functionally a name with no way to locate or contact the entity actually standing behind the tax position.
UAE Data Example
PASSES ✓: An invoice from a non-resident seller appointing a UAE tax agent includes cac:TaxRepresentativeParty with both cac:PartyName/cbc:Name and a full cac:PostalAddress.
FAILS ✗: The same block includes the representative's name but the PostalAddress element is absent — typically because the ERP configuration treats the tax representative as a reference field rather than a full party record with its own address.
What Your ERP / IT Team Must Ensure
Confirm this scenario applies to your business at all — most UAE-resident sellers will never populate a tax representative block. Where it does apply, treat the tax representative as a full party master record with mandatory name and address, not a free-text reference. Test the scenario explicitly during UAT, since it is rarely exercised in day-to-day domestic invoicing and is easy to leave unvalidated until an audit or a non-resident transaction surfaces it.
Related Rules
ibr-018 requires the tax representative's name whenever this party block exists. Both rules are conditional on the presence of cac:TaxRepresentativeParty on the invoice.