Reference
Markdown exportBT-29 Seller identifier
General identifier of the seller, for example a registry number or network identifier.
BT-29 (Seller identifier) is an additional identifier for the supplier — typically a GLN, DUNS, or scheme-qualified ID. Optional under EN 16931. Useful for buyers who route invoices on identifiers other than VAT. The scheme ID (e.g. 0088 for GLN) prefixes the value. Example: 0088:1234567890123.
BT-29 · EN 16931 / XRechnung 3.x
BT Reference Card
Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.
- BT code
BT-29- Name
- Seller identifier
- Cardinality
- Optional (O)
- Business group
- BG-4 SELLER
- Data type
- Identifier
- Example value
0088:1234567890123
Quick answer
General identifier of the seller, for example a registry number or network identifier.
Seller details
Who issued the invoice and how the recipient can identify that business reliably.
In plain language
General identifier of the seller, for example a registry number or network identifier.
General identifier of the seller, for example a registry number or network identifier.
This identifier helps buyers and automated systems identify the supplier even when names vary.
What you usually enter here
Structured seller identifier
Typical valid values include: 9930:DE123456789
Optional according to EN 16931-1, but one of BT-29, BT-30, or BT-31 is needed by BR-CO-26 to identify the seller automatically.
What goes wrong often
Avoid values like: seller
Relevant rule codes: BR-CO-26
Examples in context
This identifier helps buyers and automated systems identify the supplier even when names vary.
Optional according to EN 16931-1, but one of BT-29, BT-30, or BT-31 is needed by BR-CO-26 to identify the seller automatically.
Valid Examples
Use these points as the practical checks for this section.
- 9930:DE123456789
Invalid Examples
Use these points as the practical checks for this section.
- seller
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-29
Data Type:
identifier
Cardinality:
0..1
Requirement:
Optional
Max Length:
50 characters
Since Version:
Optional
XML Implementation
/Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyIdentification/cbc:ID/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:IDValidation Rules
BR-CO-26
BR-CO-26
Why the standard cares about this field
Business Context
This identifier helps buyers and automated systems identify the supplier even when names vary.
Legal Requirement
Optional according to EN 16931-1, but one of BT-29, BT-30, or BT-31 is needed by BR-CO-26 to identify the seller automatically.