Fatal — invoice rejected Document structure Shared Peppol rule PINT-AE 2026.5

How to fix ibr-018 in UAE e-invoicing

What is ibr-018?

ibr-018 is a fatal validation rule in the UAE's Peppol PINT-AE e-invoicing specification, inherited from the shared Peppol layer. It is checked against the invoice document and belongs to the Document structure rule group. An e-invoice that fails ibr-018 is rejected by the Accredited Service Provider gateway before it reaches the FTA.

What the official rule says

The Seller tax representative name (ibt-062) MUST be provided in the Invoice, if the Seller (ibg-04) has a Seller tax representative party (ibg-11)

UAE impact: this is a fatal rule from the shared Peppol layer, enforced in the UAE profile — an invoice failing it is rejected at the Accredited Service Provider gateway before it ever reaches the FTA. A rejected invoice means resubmission delays, and late transmission risks the AED 100-per-invoice penalty under Cabinet Decision No. 106 of 2025.

Where it applies

This rule is checked against the invoice document of your UBL 2.1 invoice:

cac:TaxRepresentativeParty

Business terms referenced

Term ID	Field	Other rules
IBT-062	Seller tax representative name	view →
IBG-04	Seller	view →
IBG-11	Seller tax representative party	view →

Field names are derived automatically from the official rule corpus.

Technical test condition (Schematron)

normalize-space(cac:PartyName/cbc:Name) != ''

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Related rules

ibr-019 The Seller tax representative postal address (ibg-12) MUST be provided in the Invoice, if the Seller ibr-056 The Seller tax representative party (ibg-11) MUST have a Seller tax representative Tax identifier (i ibr-sr-22 Seller tax representative name (ibt-062) MUST occur maximum once, if the Seller has a tax representa ibr-sr-23 Seller tax representative tax identifier (ibt-063) MUST occur maximum once, if the Seller has a tax ibr-017 The Payee name (ibt-059) MUST be provided in the Invoice, if the Payee (ibg-10) is different from th ibr-020 The Seller tax representative postal address (ibg-12) MUST contain a Tax representative country code ibr-105 The Payee identifier (ibt-060) MUST occur maximum once in the Invoice, if the Payee (ibg-10) is diff ibr-106 The Payee legal identifier (ibt-061) MUST occur maximum once in the Invoice, if the Payee (ibg-10) i

Rule text sourced from the official OpenPeppol PINT-AE validation artifacts (version 2026.5), refreshed weekly. Explanations are qmetrics' own guidance, not official FTA/MoF text.