# DE-R-017

Source: https://xmlvalid.com/rules/DE-R-017

> If both supplier and customer are located in Germany, the element "Invoice type code" (BT-3) should only contain the following values from code list UNTDID 1001: 326 (Partial invoice), 380 (Commercial invoice), 384 (Corrected invoice), 389 (Self-billed invoice), 381 (Credit note), 875 (Partial construction invoice), 876 (Partial final construction invoice), 877 (Final construction invoice).

- Level: warning
- Rule sets: Peppol BIS Billing 3.0 rules 3.0.21
- Context: `(/ubl-invoice:Invoice | /ubl-creditnote:CreditNote)[$supplierCountryIsDE and $customerCountryIsDE]`
- Test: `normalize-space(cbc:InvoiceTypeCode) = $supportedInvAndCNTypeCodes or normalize-space(cbc:CreditNoteTypeCode) = $supportedInvAndCNTypeCodes`

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