Data Model
Business Group (BG)
Definition
A Business Group (BG) groups semantically related Business Terms (BT) of the EN 16931 standard into a logical unit. Examples include BG-4 (Seller), BG-7 (Buyer), or BG-23 (VAT breakdown). Business Groups can be nested and provide a structured organisation of the invoice data model.
Switch to German:Business Group (BG) (DE)
Related terms
Business Term (BT)A Business Term (BT) is a single, semantically defined data element of the European standard EN 16931. Each Business Term has a unique number (e.g., BT-1 for the invoice number, BT-9 for the payment due date), a name, a definition, and cardinality rules. Business Terms are syntax-independent and are mapped to different XML elements in UBL and CII.EN 16931EN 16931 is the European standard that defines the semantic data model of a core invoice. It specifies the mandatory and optional fields (Business Terms), their meaning, and the validation rules that apply to all conforming electronic invoices in the EU. Nationally implemented standards such as XRechnung, ZUGFeRD (EN 16931 profile), and Factur-X must comply with this standard.XRechnungXRechnung is the German standard for structured electronic invoices in public sector procurement (B2G). It is based on the European standard EN 16931 and is available in two syntaxes: UBL 2.1 and UN/CEFACT CII. Since 27 November 2020, federal public buyers have been required to accept electronic invoices in XRechnung format, and state and municipal authorities have been progressively included.