The Guidelines for base registries (BR) interconnection provide recommendations and good practice examples collected from Member States and EU Institutions, and guide users on how to overcome the challenges Member States face, as well as how to simplify the work on BRs and registry of registries (RoR).

The Guidelines also include references to reusable solutions which are part of the ABR Catalogue of Solutions.

The approach to elaborate guidelines is described in the figure below:

Figure 1. Approach of ABR Guidelines elaboration