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All error codes · Error code · XRechnung (KoSIT)

BR-DE-15 Buyer reference (Leitweg-ID) is missing

Every XRechnung needs a buyer reference (BT-10). For German public authorities that is the Leitweg-ID, for companies a reference the customer gives you.

The rule's official text

Das Element "Buyer reference" (BT-10) muss übermittelt werden.

The buyer reference (BT-10) is missing. For public authorities that is the Leitweg-ID; for companies a reference the buyer gave you.

An error: the validator rejects the invoice, and recipients may refuse it.

What usually causes it

  • The invoice goes to a public authority, but its Leitweg-ID wasn't entered.
  • The invoice goes to a company and the field was left empty because it seemed unnecessary. XRechnung requires it anyway.
  • The reference is only in the free text or the subject, not in BT-10.

How to fix it

  1. Public authority: enter the Leitweg-ID it gave you, such as 991-12345-67. It is usually in the order or on the authority's website under invoicing.
  2. Company: enter the reference the customer uses for invoices, such as a purchase order or cost centre number. If you have none, ask for one.
  3. The rule only checks that the field is filled in. Recipients route invoices by it, though, so a placeholder can leave the invoice stuck.

Where it sits in the XML

UBL
cbc:BuyerReference
CII
ram:ApplicableHeaderTradeAgreement/ram:BuyerReference

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docket writes every invoice as a ZUGFeRD PDF and an XRechnung at once, following exactly these rules. More on e-invoicing in docket.