IS-R-002:Icelandic suppliers must provide their Icelandic legal ID (kennitala). This...
Fix: Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices. Provide the required value in the free validator.
Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices.
Engine Classification
Business data required · Explicit input workflow · No assumptions made
Required input: Seller Kennitala
What is IS-R-002?
IS-R-002 is a fatal validation rule defined in the CIUS-IS (Iceland) specification (ISL national rules).
When this rule fires, the invoice is rejected by Peppol access points and never reaches the buyer.
Why This Error Matters
Invoice will be rejected by Icelandic validation. Kennitala is required for seller identification.
IS-R-002 is a hard failure — the invoice must be corrected and re-sent before it can reach the recipient.
Validator Behavior
- ·Causes invoice rejection
- ·Error returned: IS-R-002
- ·Specification: CIUS-IS (Iceland)
How to Fix It
Identify the missing data
Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices.
Provide the required value
Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices.
Re-validate your invoice
Upload the corrected invoice to confirm IS-R-002 is resolved.
Before / After
<Invoice> <!-- Issue: Icelandic suppliers must provide their Icelandic legal ID (k --> </Invoice>
<Invoice> <!-- Issue resolved per CIUS-IS (Iceland) --> </Invoice>
Technical Reference
Common Causes
- ·Kennitala not provided
- ·Seller legal ID field empty
- ·Wrong identifier type used
- ·ERP does not export Icelandic legal ID
- ·Company master data missing kennitala
Seeing this in production? The API handles IS-R-002 automatically. See the fix response →
Frequently Asked Questions
Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices.
Icelandic suppliers must provide their Icelandic legal ID (kennitala). This 10-digit identifier is mandatory for Icelandic business invoices. You can also use Invoice Navigator's compliance engine to correct this automatically in your pipeline.
Yes, IS-R-002 is a critical error that will cause invoice rejection. It must be fixed before submission.
Many instances of IS-R-002 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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