# GR-R-010

Source: https://xmlvalid.com/rules/GR-R-010

> Greek Suppliers that send an invoice through the PEPPOL network to a greek buyer must use a correct TIN number as an electronic address according to PEPPOL Electronic Address Identifier scheme (SchemeID 9933)

- Level: error
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `cac:AccountingCustomerParty[$isGreekSenderandReceiver]/cac:Party/cbc:EndpointID`
- Test: `./@schemeID='9933' and u:TinVerification(.)`

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