This European standard establishes the rules for defining properties used in construction and a methodology for authoring and maintaining them, for a confident and seamless digital share between stakeholders. Regarding definition of properties and groups of properties, the standard provides: definitions of properties and groups of properties as a list of attributes definition of each attributes Regarding authoring and maintaining process, the standard provides: definition and role of applicants, definition and role of experts and college of experts, definition of request s attributes, definition of expert s attributes, a governance model through the establishment of a steering committee; management rules to interconnect dictionaries through properties and groups of properties mapping process.