`DE-R-017`

XRechnung (KoSIT) · validation rule

XRechnung (KoSIT)Warning

Peppol national rule for German parties (same requirement as XRechnung BR-DE-17): The invoice type code (BT-3) is outside the XRechnung subset of UNTDID 1001. XRechnung expects 326 (partial invoice), 380 (commercial invoice), 384 (corrected invoice), 389 (self-billed invoice), 381 (credit note), 875, 876 or 877 (construction invoices); other codes are accepted with a warning.

Field: document.type_code (BT-3)
Rule set: XRechnung (KoSIT)
Rule-set version: XRechnung 3.0.2 Schematron 2.6.0 · in force since 2026-10-17 · Rule-set changelog
Who has to fix it: The sender

This is a property of the file you received, so it cannot be corrected on your side without changing the document — ask the supplier to reissue it.

Check your own invoice

Drop the file that failed. We parse it, run the official rule sets against it and list every finding with a fix — 20 invoices per day, no key, nothing stored.

Open the live demo

Same explanation over the API: GET /v1/rules/DE-R-017?lang=en