EESPA, the European E-invoicing Service Providers Association, recently published EESPA Standard Definitions for Legally Compliant Electronic Invoicing and their usage.
This document aims to provide a basis for e-invoicing service providers and their customers to agree on allocation of responsibility of the legal compliance of processes supported by the services. These standard definitions will contribute to clearer agreements, encourage best practice and ensure professionalism in the e-invoice industry.
Source Sovos