Buying groups are characterized by complex, multi-tier structures in which the central organization, members, and suppliers work closely together. When e-invoicing is introduced, the abstract EU standard EN 16931 meets heterogeneous, historically evolved process and system landscapes, giving rise to concrete implementation challenges. Key difficulties lie in unambiguous identifiers as well as consistent mapping, routing, and role models, for example in central settlement or drop-shipment arrangements. Differing invoice recipients, inconsistent master data, and complex business models lead to validation and processing errors. The integration of existing EDI structures and parallel formats adds further complexity, for instance in collaboration with suppliers, resulting in media discontinuities, manual effort, and limited automation.

The “Buying Groups” Industry Center addresses exactly this point: users from different industry segments contribute concrete issues from their day-to-day operations. This gives rise to a structured catalog of requirements, which is consolidated together with the industry association and solution providers and translated into precise implementation recommendations. The aim is to close the gap between EN 16931 and the specific requirements of buying groups. Participating companies ensure that their own challenges are addressed in a targeted way, while the industry as a whole benefits from clear guidelines for introducing and operating e-invoicing.

Key Priorities

Development of unambiguous identification and mapping logic

Definition of consistent routing and role models

Harmonization of master data structures for central organizations and members

Mapping of sector-specific pricing and rebate models

Standardization of transformation and validation rules