Reference
Markdown exportBT-63 Seller tax representative VAT identifier
VAT identifier of the seller tax representative. Enter the VAT number with the country prefix used by the representative.
Quick answer
Seller details
Who issued the invoice and how the recipient can identify that business reliably.
Quick actions
In plain language
VAT identifier of the seller tax representative. Enter the VAT number with the country prefix used by the representative.
VAT identifier of the seller tax representative. Enter the VAT number with the country prefix used by the representative.
Validators use this identifier in VAT scenarios where the fiscal representative stands in for the seller toward the tax administration.
What you usually enter here
Country code prefix plus VAT number
Typical valid values include: DE123456789, FRAB123456789
Required by BR-56 for each seller tax representative party. It must carry an ISO 3166-1 alpha-2 country prefix according to BR-CO-09.
What goes wrong often
Avoid values like: 123456789, DE 123456789
Relevant rule codes: BR-56, BR-CO-09
Examples in context
Validators use this identifier in VAT scenarios where the fiscal representative stands in for the seller toward the tax administration.
Required by BR-56 for each seller tax representative party. It must carry an ISO 3166-1 alpha-2 country prefix according to BR-CO-09.
Valid Examples
- DE123456789
- FRAB123456789
Invalid Examples
- 123456789
- DE 123456789
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-63
Data Type:
identifier
Cardinality:
1..1
Requirement:
Mandatory
Max Length:
30 characters
Since Version:
Conditional
XML Implementation
/Invoice/cac:TaxRepresentativeParty/cac:PartyTaxScheme/cbc:CompanyID/CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:SellerTaxRepresentativeTradeParty/ram:SpecifiedTaxRegistration/ram:IDValidation Rules
BR-56
BR-56
BR-CO-09
BR-CO-09
Next step
Check whether your XRechnung sets BT-63 correctly
Upload the XML file to the free validator. It applies the KoSIT rules for XRechnung 3.0 and names each finding with its rule ID, for this field for example BR-56, BR-CO-09. Creating a new invoice instead? The converter checks the invoice against the same rules and shows the findings before download.
Free, no account needed. XML file up to 2 MB.
Why the standard cares about this field
Business Context
Validators use this identifier in VAT scenarios where the fiscal representative stands in for the seller toward the tax administration.
Legal Requirement
Required by BR-56 for each seller tax representative party. It must carry an ISO 3166-1 alpha-2 country prefix according to BR-CO-09.