Reference
Markdown exportBT-46 Buyer identifier
General identifier of the buyer, for example a customer ID, network ID, or routing ID.
BT-46 (Buyer identifier) is an additional identifier for the buyer — GLN, DUNS, or another scheme-qualified ID. Optional under EN 16931 but used by buyers whose ERP keys are not their VAT number. The scheme ID (e.g. 0088 for GLN) qualifies the value. Example: 0088:9876543210123.
BT-46 · EN 16931 / XRechnung 3.x
BT Reference Card
Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.
- BT code
BT-46- Name
- Buyer identifier
- Cardinality
- Optional (O)
- Business group
- BG-7 BUYER
- Data type
- Identifier
- Example value
0088:9876543210123
Quick answer
General identifier of the buyer, for example a customer ID, network ID, or routing ID.
Buyer details
Who receives the invoice and which buyer records or routing data must match.
In plain language
General identifier of the buyer, for example a customer ID, network ID, or routing ID.
General identifier of the buyer, for example a customer ID, network ID, or routing ID.
This allows suppliers and receiving systems to identify the buyer by a stable machine-readable key.
What you usually enter here
Structured buyer identifier
Typical valid values include: CUST-10045
Optional according to EN 16931-1.
What goes wrong often
Avoid values like:
Examples in context
This allows suppliers and receiving systems to identify the buyer by a stable machine-readable key.
Optional according to EN 16931-1.
Valid Examples
Use these points as the practical checks for this section.
- CUST-10045
XML mapping and field facts
Open the technical reference if you need XML paths, validator rule codes, legal wording, or schema-specific mapping details.
Field ID:
BT-46
Data Type:
identifier
Cardinality:
0..1
Requirement:
Optional
Max Length:
50 characters
Since Version:
Optional
XML Implementation
/Invoice/cac:AccountingCustomerParty/cac:Party/cac:PartyIdentification/cbc:ID/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:IDWhy the standard cares about this field
Business Context
This allows suppliers and receiving systems to identify the buyer by a stable machine-readable key.
Legal Requirement
Optional according to EN 16931-1.