该CEN技术规范（TS）包含电子发票核心要素的语法绑定方法。当使用CEN/TS 16931-3-2部分中指定的CEN/TS 16931-3-2中包含CEN/TS 16931-3-5之间的语法之一时，要遵循的任何规则在本TS中非正式地表示。与此TS一起出版了一套验证文物，包括规则的正式化

This Technical Specification (TS) specifies the methodology of the mapping between the semantic model of an electronic invoice, included in EN 16931-1 and a syntax. For each element in the semantic model (including sub-elements or supplementary components such as Identification scheme identifiers) it should be defined which element in the syntax is to be used to contain its information contents. Any mismatches between semantics, format, cardinality or structure are indicated.