IS-R-008:When Icelandic invoices include EINDAGI (final due date) in supporting...
Fix: Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (IS-R-008). Upload your invoice to fix this automatically.
When Icelandic invoices include EINDAGI (final due date) in supporting documents, the date must be in YYYY-MM-DD format.
Engine Classification
Ensure accounting cost is present for Icelandic invoice lines
Confidence: 80% · Applied automatically in pipeline
What is IS-R-008?
IS-R-008 is a fatal validation rule defined in the CIUS-IS (Iceland) specification (ISL national rules). It validates the AccountingCost element in the UBL invoice XML.
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Target path: //cac:InvoiceLine/cbc:AccountingCost
Why This Error Matters
Invoice will be rejected by Icelandic validation. EINDAGI date must use ISO date format.
IS-R-008 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Invoice Navigator can automatically correct this error in your pipeline. The fix is applied with full audit evidence, so your compliance trail remains intact.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: IS-R-008
- ·Specification: CIUS-IS (Iceland)
How to Fix It
Find the missing or empty field
Check cbc:AccountingCost at //cac:InvoiceLine/cbc:AccountingCost. This field is required but is either missing or empty.
Set the required value
Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (IS-R-008).
Re-validate your invoice
Upload the corrected invoice to confirm IS-R-008 is resolved.
Before / After
<Invoice> <!-- Issue: If seller is Icelandic and invoice contains supporting descr --> </Invoice>
<Invoice> <!-- Issue resolved per CIUS-IS (Iceland) --> </Invoice>
Technical Reference
//cac:InvoiceLine/cbc:AccountingCostCommon Causes
- ·EINDAGI date in wrong format
- ·Date format DD-MM-YYYY used instead
- ·Icelandic date format used instead of ISO
- ·Date formatting error in export
- ·Manual entry with wrong format
Seeing this in production? The API handles IS-R-008 automatically. See the fix response →
Frequently Asked Questions
When Icelandic invoices include EINDAGI (final due date) in supporting documents, the date must be in YYYY-MM-DD format.
Invoice Navigator automatically fixes this Invoice compliance issue by updating the relevant XML elements (IS-R-008). You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, IS-R-008 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of IS-R-008 can be automatically corrected using Invoice Navigator's compliance engine. The fix is applied in your pipeline with full audit evidence.
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Last updated: 14 April 2026
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