errorISPEPPOL_BIS

IS-R-004:When both seller and buyer are Icelandic, the buyer's kennitala must be provided. This is required for domestic Icelandi

When both seller and buyer are Icelandic, the buyer's kennitala must be provided. This is required for domestic Icelandic transactions.

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NEEDS INPUT

Requires user input: Buyer kennitala (10 digits). User must provide buyer's Icelandic legal ID for domestic invoices.

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Why This Error Matters

Invoice will be rejected by Icelandic validation. Domestic transactions require buyer kennitala.

Common Causes

  • Buyer kennitala missing on domestic invoice
  • Customer master data incomplete
  • ERP does not enforce buyer ID for domestic
  • Buyer legal ID field not populated
  • Private consumer without kennitala

Frequently Asked Questions

When both seller and buyer are Icelandic, the buyer's kennitala must be provided. This is required for domestic Icelandic transactions.
When both seller and buyer are Icelandic, the buyer's kennitala must be provided. This is required for domestic Icelandic transactions. You can also use Invoice Navigator's automatic Fixer tool to correct this instantly.
Yes, IS-R-004 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted.
Many instances of IS-R-004 can be automatically corrected using Invoice Navigator's Fixer tool. Upload your invoice and the tool will identify and fix common issues.

Last updated: 18 January 2026

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