# BT-49 Buyer Electronic Address Electronic address of the buyer for routing and delivery of electronic invoices > BT-49 (Buyer electronic address) is the routable address for invoice delivery, qualified by an EAS scheme code. It is mandatory in XRechnung 3.x and optional in base EN 16931. Use the scheme and address registered for the buyer. > > BT-49 · EN 16931 / XRechnung 3.x ## BT Reference Card Key EN 16931 and XRechnung facts for this business term. - **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**: PEPPOL-EN16931-R010 requires the buyer electronic address (BT-49), and R020 requires its scheme identifier. Use the address and EAS scheme registered for the buyer. - **XRechnung note**: XRechnung 3.x requires BT-49 through the Peppol rules. Supply a routable buyer address together with its EAS scheme. Do not copy BT-10 into BT-49 unless that identifier is also the buyer’s registered electronic address under the stated scheme. ## Quick answer Electronic address of the buyer for routing and delivery of electronic invoices > **Buyer details**: Who receives the invoice and which buyer records or routing data must match. - [Validate XML](/en/xrechnung-validator?source=resource&bt=BT-49) - [Convert invoice](/en/pdf-to-xrechnung?source=resource&bt=BT-49) ## In plain language Electronic address of the buyer for routing and delivery of electronic invoices Electronic address of the buyer for routing and delivery of electronic invoices Required by XRechnung 3.0.1+. Use the address and scheme supplied by the buyer. Direct delivery can use EM for email; Peppol delivery requires the registered Peppol participant identifier and scheme. ## What you usually enter here Valid EAS scheme code followed by a colon and the electronic address value Typical valid values include: EM:buyer@authority.gov, 9930:DE987654321, 0088:4098765000014, 0204:991-98765-43 Optional (0..1) in base EN 16931, but mandatory under XRechnung and PEPPOL BIS Billing 3.0, which require a routable buyer electronic address (enforced by rule PEPPOL-EN16931-R010) ## What goes wrong often Avoid values like: DE987654321, EM:not-an-email, 987654321, TAX:DE987654321 Relevant rule codes: PEPPOL-EN16931-R010, BR-63 ## Examples in context Required by XRechnung 3.0.1+. Use the address and scheme supplied by the buyer. Direct delivery can use EM for email; Peppol delivery requires the registered Peppol participant identifier and scheme. Optional (0..1) in base EN 16931, but mandatory under XRechnung and PEPPOL BIS Billing 3.0, which require a routable buyer electronic address (enforced by rule PEPPOL-EN16931-R010) ## Valid Examples - EM:buyer@authority.gov - 9930:DE987654321 - 0088:4098765000014 - 0204:991-98765-43 ## Invalid Examples - DE987654321 - EM:not-an-email - 987654321 - TAX:DE987654321 ## Related Fields Required by XRechnung 3.0.1+. Use the address and scheme supplied by the buyer. Direct delivery can use EM for email; Peppol delivery requires the registered Peppol participant identifier and scheme. - [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 ### PEPPOL-EN16931-R010 Buyer Electronic Address (BT-49) must be provided ### BR-63 Buyer Electronic Address must contain scheme ID and value ## Check whether your XRechnung sets BT-49 correctly Upload the XML file to the free validator. It applies the KoSIT rules for XRechnung 3.0 and reports a missing address or scheme with its rule ID (PEPPOL-EN16931-R010, BR-63). Creating the invoice from a PDF? The converter requires the address before download and shows its scheme (EM for e-mail unless you choose another). - [Validate XML](/en/xrechnung-validator) - [Convert invoice](/en/pdf-to-xrechnung) Free, no account needed. XML file up to 2 MB. ## Why the standard cares about this field ### Business Context Required by XRechnung 3.0.1+. Use the address and scheme supplied by the buyer. Direct delivery can use EM for email; Peppol delivery requires the registered Peppol participant identifier and scheme. ### Legal Requirement Optional (0..1) in base EN 16931, but mandatory under XRechnung and PEPPOL BIS Billing 3.0, which require a routable buyer electronic address (enforced by rule PEPPOL-EN16931-R010) ## 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 must provide the address and scheme to use. Search the Peppol directory only when the invoice will be delivered through Peppol. ### 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 the buyer electronic address. It can use email or another valid EAS scheme. BT-10 is the buyer reference, often a Leitweg-ID for German public recipients. ## Official sources and tools - [KoSIT Validator](https://erechnungsvalidator.service-bw.de/) - [XRechnung Standard](https://xeinkauf.de/xrechnung/) - [Test Suite](https://github.com/itplr-kosit/xrechnung-testsuite)