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Fatal — invoice rejected Invoice lines & items UAE-specific rule PINT-AE 2026.5

How to fix aligned-ibrp-004 in UAE e-invoicing

What is aligned-ibrp-004?

aligned-ibrp-004 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 allowances and charges and belongs to the Invoice lines & items rule group. An e-invoice that fails aligned-ibrp-004 is rejected by the Accredited Service Provider gateway before it reaches the FTA.

What the official rule says

Item net price (ibt-146) MUST equal (Gross price (ibt-148) - Price discount (ibt-147)) when gross price is provided.
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 allowances and charges of your UBL 2.1 invoice: 

cac:Price/cac:AllowanceCharge

Business terms referenced

Term ID Field Other rules
IBT-146 Item net price view →
IBT-148 Gross price view →
IBT-147 Price discount view →

Field names are derived automatically from the official rule corpus.

Technical test condition (Schematron) 
not(cbc:BaseAmount) or (../cbc:PriceAmount castable as xs:decimal and cbc:BaseAmount castable as xs:decimal and cbc:Amount castable as xs:decimal and xs:decimal(../cbc:PriceAmount) = xs:decimal(cbc:BaseAmount) - xs:decimal(cbc:Amount))

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Related rules

ibr-083 Charge on price level (ibt-147) is NOT allowed. Only value 'false' allowed. ibr-026 Each Invoice line (ibg-25) MUST contain the Item net price (ibt-146). ibr-027 The Item net price (ibt-146) MUST NOT be negative. ibr-028 The Item gross price (ibt-148) MUST NOT be negative. ibr-111 Item price discount (ibt-147) MUST occur maximum once. ibr-126-ae In Price Details (IBG-29), Item price base quantity (IBT-149) and Item Gross Price (IBT-148) MUST be ibr-147-ae Invoice line net amount (IBT-131) MUST equal (Invoiced quantity (IBT-129) * (Item net price (IBT-146 ibr-016 An Invoice MUST have at least one Invoice line (ibg-25)

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.