# IS-R-005

Source: https://xmlvalid.com/rules/IS-R-005

> If seller and buyer are icelandic then the invoice shall contain the buyers address with street name and zip code — Ef seljandi og kaupandi eru íslenskir þá skal heimilisfang kaupanda innihalda götuheiti og póstnúmer (BT-50 og BT-53)

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `ubl-creditnote:CreditNote[$SupplierCountry = 'IS' and $CustomerCountry = 'IS']/cac:AccountingCustomerParty | ubl-invoice:Invoice[$SupplierCountry = 'IS' and $CustomerCountry = 'IS']/cac:AccountingCustomerParty`
- Test: `exists(cac:Party/cac:PostalAddress/cbc:StreetName) and exists(cac:Party/cac:PostalAddress/cbc:PostalZone)`

Validate a document against these rules: https://xmlvalid.com/validate