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BR-DE-15 — Buyer reference (BT-10) is missing

• Standard: XRechnung
• Severity: fatal
• Business Terms: BT-10

Meaning

The "Buyer reference" element (BT-10) must be present — cbc:BuyerReference. In the German B2G context this field carries the Leitweg-ID (routing id).

Possible causes

• cbc:BuyerReference is absent entirely.
• cbc:BuyerReference is present but empty / whitespace-only.

How to fix it

• Set BT-10 (cbc:BuyerReference) to the reference supplied by the recipient (e.g. the Leitweg-ID).

Affected fields

• /ubl:Invoice/cbc:BuyerReference

Example (invalid invoice)

invalid/BR-DE-15/ubl-inv-missing-buyer-reference.xml