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

How to fix aligned-ibrp-z-08 in UAE e-invoicing

What is aligned-ibrp-z-08?

aligned-ibrp-z-08 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 the VAT totals and belongs to the VAT categories & rates rule group. An e-invoice that fails aligned-ibrp-z-08 is rejected by the Accredited Service Provider gateway before it reaches the FTA.

What the official rule says

In a VAT breakdown (ibg-23) where VAT category code (ibt-118) is "Zero rated" the VAT category taxable amount (ibt-116) MUST equal the sum of Invoice line net amount (ibt-131) minus the sum of Document level allowance amounts (ibt-92) plus the sum of Document level charge amounts (ibt-99) where the VAT category codes (ibt-151, ibt-95, ibt-102) are "Zero rated".
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 the VAT totals of your UBL 2.1 invoice: 

/*/cac:TaxTotal/cac:TaxSubtotal/cac:TaxCategory[normalize-space(cbc:ID) = 'Z'][cac:TaxScheme/normalize-space(upper-case(cbc:ID))='VAT']

Business terms referenced

Term ID Field Other rules
IBG-23 VAT breakdown view →
IBT-118 VAT category code view →
IBT-116 VAT category taxable amount view →
IBT-131 Invoice line net amount view →
IBT-92 Document level allowance amounts view →
IBT-99 Document level charge amounts view →
IBT-151 Invoiced item VAT category code view →
IBT-95 Document level allowance VAT category code view →
IBT-102 Document level charge VAT category code view →

Field names are derived automatically from the official rule corpus.

Technical test condition (Schematron) 
(exists(//cac:InvoiceLine) and (xs:decimal(../cbc:TaxableAmount) = (sum(../../../cac:InvoiceLine[cac:Item/cac:ClassifiedTaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:LineExtensionAmount)) + sum(../../../cac:AllowanceCharge[cbc:ChargeIndicator=true()][cac:TaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:Amount)) - sum(../../../cac:AllowanceCharge[cbc:ChargeIndicator=false()][cac:TaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:Amount))))) or (exists(//cac:CreditNoteLine) and (xs:decimal(../cbc:TaxableAmount) = (sum(../../../cac:CreditNoteLine[cac:Item/cac:ClassifiedTaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:LineExtensionAmount)) + sum(../../../cac:AllowanceCharge[cbc:ChargeIndicator=true()][cac:TaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:Amount)) - sum(../../../cac:AllowanceCharge[cbc:ChargeIndicator=false()][cac:TaxCategory/normalize-space(cbc:ID)='Z']/xs:decimal(cbc:Amount)))))

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Related rules

aligned-ibrp-z-09 The VAT category tax amount (ibt-117) in a VAT breakdown (ibg-23) where VAT category code (ibt-118) ibr-120-ae In a VAT breakdown (IBG-23) where VAT category code (IBT-118) is 'Zero Rated', VAT category Rate (IB aligned-ibrp-045 Each VAT breakdown (ibg-23) MUST have a VAT category taxable amount (ibt-116). aligned-ibrp-046 Each VAT breakdown (ibg-23) MUST have a VAT category tax amount (ibt-117). aligned-ibrp-047 Each VAT breakdown (ibg-23) MUST be defined through a VAT category code (ibt-118). aligned-ibrp-048 Each VAT breakdown (ibg-23) MUST have a VAT category rate (ibt-119), except if the Invoice is not su 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-08-ae In a VAT Breakdown (IBG-23) where the VAT category code (IBT-118) is 'Reverse Charge', for each diff

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.