# BT-44 Buyer Name The full formal name by which the buyer is registered in the national registry of legal entities or as a taxable person or otherwise trades as a person or persons > BT-44 (Buyer name) is the full legal name of the entity receiving the invoice. Mandatory under EN 16931. For German B2G it must match the public-sector entity associated with the Leitweg-ID (BT-10). Use the registered legal form, not informal labels. Example: Bundesamt für Musterverwaltung. > > BT-44 · EN 16931 / XRechnung 3.x ## BT Reference Card Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor. - **BT code**: BT-44 - **Name**: Buyer Name - **Cardinality**: Mandatory (M) - **Business group**: BG-7 BUYER - **Data type**: Text - **Example value**: Bundesamt für Musterverwaltung ## Quick answer The full formal name by which the buyer is registered in the national registry of legal entities or as a taxable person or otherwise trades as a person or persons > **Buyer details**: Who receives the invoice and which buyer records or routing data must match. ## In plain language The full formal name by which the buyer is registered in the national registry of legal entities or as a taxable person or otherwise trades as a person or persons The full formal name by which the buyer is registered in the national registry of legal entities or as a taxable person or otherwise trades as a person or persons Essential for identifying the invoice recipient and the organization responsible for payment ## What you usually enter here Free text with standard business name characters Typical valid values include: Bundesministerium der Finanzen, Stadt München, Universität Hamburg, BMW AG Mandatory field for all electronic invoices according to EN 16931 and German e-invoice regulations ## What goes wrong often Avoid values like: B, AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Relevant rule codes: BR-CO-26 ## Examples in context Essential for identifying the invoice recipient and the organization responsible for payment Mandatory field for all electronic invoices according to EN 16931 and German e-invoice regulations ## Valid Examples - Bundesministerium der Finanzen - Stadt München - Universität Hamburg - BMW AG - Siemens Healthineers AG ## Invalid Examples - B - AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ## Related Fields Essential for identifying the invoice recipient and the organization responsible for payment - [BT-45 Buyer trading name](/resources/xrechnung/bt-45-buyer-trading-name) - [BT-46 Buyer identifier](/resources/xrechnung/bt-46-buyer-identifier) - [BT-47 Buyer legal registration identifier](/resources/xrechnung/bt-47-buyer-legal-registration-identifier) - [BT-48 Buyer VAT Identifier](/resources/xrechnung/bt-48-buyer-vat-identifier) - [BT-49 Buyer Electronic Address](/resources/xrechnung/bt-49-buyer-electronic-address) - [BT-50 Buyer Address Line 1](/resources/xrechnung/bt-50-buyer-address-line-1) - [BT-51 Buyer address line 2](/resources/xrechnung/bt-51-buyer-address-line-2) - [BT-52 Buyer City](/resources/xrechnung/bt-52-buyer-city) - [BT-53 Buyer Post Code](/resources/xrechnung/bt-53-buyer-post-code) - [BT-54 Buyer country subdivision](/resources/xrechnung/bt-54-buyer-country-subdivision) - [BT-55 Buyer Country Code](/resources/xrechnung/bt-55-buyer-country-code) ## 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-44 ### Data Type: text ### Cardinality: 1..1 ### Requirement: Mandatory ### Max Length: 200 characters ### Since Version: XRechnung 1.0+ ## XML Implementation ### UBL 2.1 Syntax ``` /Invoice/cac:AccountingCustomerParty/cac:Party/cac:PartyName/cbc:Name ``` ### CII (UN/CEFACT) Syntax ``` /CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:Name ``` ## Validation Rules ### BR-CO-26 BR-CO-26 ## Why the standard cares about this field ### Business Context Essential for identifying the invoice recipient and the organization responsible for payment ### Legal Requirement Mandatory field for all electronic invoices according to EN 16931 and German e-invoice regulations ## FAQ ### Should I use the department name or the full organization name? Use the full legal name of the organization that is contractually responsible for the purchase. Department information can be included in additional buyer fields or contact details. ### How should I handle public administration names? For German public administrations, use the complete official name (e.g., "Bundesministerium der Finanzen", "Stadt München"). Avoid abbreviations unless they are part of the official name. ### What about subsidiaries and branch offices? Use the name of the specific legal entity that is purchasing. If it's a subsidiary, use the subsidiary's name, not the parent company's name. ## Official sources and tools - [KoSIT Validator](https://erechnungsvalidator.service-bw.de/) - [Invoice Converter](/pdf-to-xrechnung) - [XRechnung Standard](https://xeinkauf.de/xrechnung/) - [Test Suite](https://github.com/itplr-kosit/xrechnung-testsuite)