Reference
Markdown exportBT-30 Seller legal registration identifier
Legal registration identifier of the seller, such as a commercial register number.
BT-30 (Seller legal registration identifier) is the supplier's registry number — for example a German Handelsregister number (HRB) or another national company register. Optional under EN 16931 but commonly required for German invoices. Provide the qualifier and number. Example: HRB 123456.
BT-30 · EN 16931 / XRechnung 3.x
BT Reference Card
Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor.
- BT code
BT-30- Name
- Seller legal registration identifier
- Cardinality
- Optional (O)
- Business group
- BG-4 SELLER
- Data type
- Identifier
- Example value
HRB 123456
Quick answer
Legal registration identifier of the seller, such as a commercial register number.
Seller details
Who issued the invoice and how the recipient can identify that business reliably.
Quick actions
In plain language
Legal registration identifier of the seller, such as a commercial register number.
Legal registration identifier of the seller, such as a commercial register number.
This gives the buyer a formal registry-based way to identify the seller as a legal entity.
What you usually enter here
Registry identifier
Typical valid values include: HRB 12345
Optional according to EN 16931-1, but it can satisfy BR-CO-26 together with BT-29 or BT-31.
What goes wrong often
Avoid values like:
Relevant rule codes: BR-CO-26
Examples in context
This gives the buyer a formal registry-based way to identify the seller as a legal entity.
Optional according to EN 16931-1, but it can satisfy BR-CO-26 together with BT-29 or BT-31.
Valid Examples
Use these points as the practical checks for this section.
- HRB 12345
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-30
Data Type:
identifier
Cardinality:
0..1
Requirement:
Optional
Max Length:
50 characters
Since Version:
Optional
XML Implementation
/Invoice/cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:CompanyID/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:SellerTradeParty/ram:SpecifiedLegalOrganization/ram:IDValidation Rules
BR-CO-26
BR-CO-26
Why the standard cares about this field
Business Context
This gives the buyer a formal registry-based way to identify the seller as a legal entity.
Legal Requirement
Optional according to EN 16931-1, but it can satisfy BR-CO-26 together with BT-29 or BT-31.