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Fatal — invoice rejected VAT categories & rates UAE-specific rule PINT-AE 2026.5

How to fix aligned-ibrp-s-05 in UAE e-invoicing

What is aligned-ibrp-s-05?

aligned-ibrp-s-05 is a fatal validation rule in the UAE's Peppol PINT-AE e-invoicing specification — one of the UAE-specific rules. It is checked against each invoice line and belongs to the VAT categories & rates rule group. An e-invoice that fails aligned-ibrp-s-05 is rejected by the Accredited Service Provider gateway before it reaches the FTA.

What the official rule says

In an Invoice line (ibg-25) where the Invoiced item VAT category code (ibt-151) is "Standard rated" the Invoiced item VAT rate (ibt-152) MUST be greater than zero.
UAE impact: this is a fatal rule specific to the UAE PINT-AE 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 each invoice line of your UBL 2.1 invoice: 

cac:InvoiceLine/cac:Item/cac:ClassifiedTaxCategory[normalize-space(cbc:ID) = 'S'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT'] | cac:CreditNoteLine/cac:Item/cac:ClassifiedTaxCategory[normalize-space(cbc:ID) = 'S'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']

Business terms referenced

Term ID Field Other rules
IBG-25 Invoice line view →
IBT-151 Invoiced item VAT category code view →
IBT-152 Invoiced item VAT rate view →

Field names are derived automatically from the official rule corpus.

Why this happens

On a standard-rated (category S) invoice line, the stated VAT rate must be greater than zero — in the UAE that means the 5% standard rate. A standard-rated line with a 0% rate is contradictory and fatally rejected; if the supply is genuinely zero-rated, its category must be Z, not S.

How to fix it

1. If the line should be standard-rated: set Percent to 5. 2. If the line is genuinely zero-rated: change the category ID from S to Z. 3. Check the VAT breakdown (IBG-23) reflects the same category and rate.

Technical test condition (Schematron) 
(cbc:Percent castable as xs:decimal and xs:decimal(cbc:Percent) > 0)

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Related rules

aligned-ibrp-ae-01-ae An Invoice that contains an Invoice line (ibg-25), a Document level allowance (ibg-20) or a Document aligned-ibrp-ae-05-ae In an Invoice line (ibg-25) where the Invoiced item VAT category code (ibt-151) is "Reverse charge" aligned-ibrp-ae-08-ae In a VAT Breakdown (IBG-23) where the VAT category code (IBT-118) is 'Reverse Charge', for each diff aligned-ibrp-e-01 An Invoice that contains an Invoice line (ibg-25), a Document level allowance (ibg-20) or a Document aligned-ibrp-e-05 In an Invoice line (ibg-25) where the Invoiced item VAT category code (ibt-151) is "Exempt from VAT" aligned-ibrp-e-08 In a VAT breakdown (ibg-23) where the VAT category code (ibt-118) is "Exempt from VAT" the VAT categ aligned-ibrp-o-01 An Invoice that contains an Invoice line (ibg-25), a Document level allowance (ibg-20) or a Document aligned-ibrp-o-05 An Invoice line (ibg-25) where the VAT category code (ibt-151) is "Not subject to VAT" MUST not cont

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.