# BT-49 Buyer Electronic Address Electronic address of the buyer for routing and delivery of electronic documents within the PEPPOL network > BT-49 (Buyer electronic address) is the routable identifier for delivering the invoice — a Leitweg-ID, PEPPOL endpoint, or registered email — qualified by an EAS scheme code. Mandatory in XRechnung; optional in base EN 16931. Both scheme ID and address must be supplied. Example: 0204:991-12345-XX. > > BT-49 · EN 16931 / XRechnung 3.x ## BT Reference Card Canonical EN 16931 / XRechnung facts for this business term — citable from this anchor. - **BT code**: BT-49 - **Name**: Buyer Electronic Address - **Cardinality**: Mandatory (M) — XRechnung; Optional (O) — EN 16931 - **Business group**: BG-7 BUYER - **Data type**: Identifier - **Example value**: 0204:991-12345-XX - **Common error**: BR-DE-9 / BR-DE-15 (rulepack ref): Buyer electronic address (BT-49) must be present in XRechnung. The value must include both a scheme identifier and the address itself. - **XRechnung note**: XRechnung promotes BT-49 from optional to mandatory. The scheme ID must be from EAS (e.g. 0204 for Leitweg-ID), and the value must be a routable electronic address (Leitweg-ID, PEPPOL endpoint, or registered email). ## Quick answer Electronic address of the buyer for routing and delivery of electronic documents within the PEPPOL network > **Buyer details**: Who receives the invoice and which buyer records or routing data must match. ## In plain language Electronic address of the buyer for routing and delivery of electronic documents within the PEPPOL network Electronic address of the buyer for routing and delivery of electronic documents within the PEPPOL network Critical for automated invoice delivery to the correct buyer organization through PEPPOL networks. Ensures invoices reach the intended recipient and enables electronic acknowledgment processes ## What you usually enter here Scheme identifier (4 digits) followed by colon and identifier value Typical valid values include: 9930:DE987654321, 0088:4098765000014, 9906:9876543210987, 0204:9876543210 Mandatory since XRechnung 3.0.1 (2024) for buyer identification and compliance with PEPPOL BIS 3.0 electronic addressing requirements ## What goes wrong often Avoid values like: DE987654321, buyer@authority.gov, 987654321, TAX:DE987654321 Relevant rule codes: BR-DE-32, BR-63 ## Examples in context Critical for automated invoice delivery to the correct buyer organization through PEPPOL networks. Ensures invoices reach the intended recipient and enables electronic acknowledgment processes Mandatory since XRechnung 3.0.1 (2024) for buyer identification and compliance with PEPPOL BIS 3.0 electronic addressing requirements ## Valid Examples - 9930:DE987654321 - 0088:4098765000014 - 9906:9876543210987 - 0204:9876543210 ## Invalid Examples - DE987654321 - buyer@authority.gov - 987654321 - TAX:DE987654321 ## Related Fields Critical for automated invoice delivery to the correct buyer organization through PEPPOL networks. Ensures invoices reach the intended recipient and enables electronic acknowledgment processes - [BT-34 Seller Electronic Address](/resources/xrechnung/bt-34-seller-electronic-address) - [BT-23 Business Process Type Identifier](/resources/xrechnung/bt-23-business-process-type-identifier) - [BT-44 Buyer Name](/resources/xrechnung/bt-44-buyer-name) - [BT-45 Buyer trading name](/resources/xrechnung/bt-45-buyer-trading-name) - [BT-10 Buyer Reference](/resources/xrechnung/bt-10-buyer-reference-leitweg-id) ## 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-49 ### Data Type: text ### Cardinality: 1..1 ### Requirement: Mandatory ### Max Length: 50 characters ### Since Version: XRechnung 3.0.1+ ## XML Implementation ### UBL 2.1 Syntax ``` /Invoice/cac:AccountingCustomerParty/cac:Party/cbc:EndpointID ``` ### CII (UN/CEFACT) Syntax ``` /CrossIndustryInvoice/SupplyChainTradeTransaction/ApplicableHeaderTradeAgreement/ram:BuyerTradeParty/ram:URIUniversalCommunication/ram:URIID ``` ## Validation Rules ### BR-DE-32 Buyer Electronic Address (BT-49) must be provided ### BR-63 Buyer Electronic Address must contain scheme ID and value ## Why the standard cares about this field ### Business Context Critical for automated invoice delivery to the correct buyer organization through PEPPOL networks. Ensures invoices reach the intended recipient and enables electronic acknowledgment processes ### Legal Requirement Mandatory since XRechnung 3.0.1 (2024) for buyer identification and compliance with PEPPOL BIS 3.0 electronic addressing requirements ## FAQ ### What is a Buyer Electronic Address? It is the electronic identifier of the invoice recipient that enables automated routing and delivery through PEPPOL networks. ### How do I find a buyer's electronic address? The buyer should provide their electronic address when requesting electronic invoices. You can also search the PEPPOL directory. ### What happens if the buyer electronic address is wrong? The invoice will not be delivered correctly and may be rejected by the network. Always verify the address with the buyer. ### Is BT-49 the same as the Leitweg-ID (BT-10)? No. BT-49 is for PEPPOL network routing, while BT-10 (Leitweg-ID) is for internal routing within German public administration. ## 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)