Bundeswehr

Defense procurement invoicing with strict requirements on attachments, transmission security, and EN 16931-compliant structured formats.

Key Requirements

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XRechnung Format — XRechnung (or EN 16931 equivalent) is the required format for all invoices to Bundeswehr / BAAINBw.
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Leitweg-ID (BT-10) — Mandatory. Provided by the contracting authority and placed in BT-10.
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PO Number (BT-13) — Purchase order number (Bestellnummer) is mandatory for all invoices.
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Bedarfsnummer — Internal requirement reference used for procurement tracking within defense systems.
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Contract / Project References (BT-11 / BT-19) — Required to assign invoices to the correct contract and budget line.
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Attachment Security — Encrypted transmission channels and controlled file types are mandatory.

Field	Requirement	Status
BT-10	Leitweg-ID	MANDATORY
BT-13	Purchase order number (Bestellnummer)	MANDATORY
Bedarfsnummer	Internal procurement reference	CONDITIONAL
BT-11	Contract reference	REQUIRED
BT-19	Project / budget line reference	REQUIRED
Format	XRechnung / EN 16931	REQUIRED