19. The expert from IWG SLR reported on the challenges of implementing the Unique Identifier (UI) in the new simplified UN Regulations (GRE-82-31) in the light of the progress of IWG on Database for the Exchange of Type Approval Documentation (DETA). GRE reiterated its view that for lighting and light-signalling devices, approval markings should be replaced by UI. At the same time, GRE noted that the access rights currently proposed by IWG DETA would not be sufficient for the efficient use of UI for the lighting and light-signalling UN Regulations. GRE mandated IWG SLR and the Chair to bring the specific GRE needs for the DETA access rights to the attention of IWG DETA and WP.29 at their forthcoming sessions in November 2019.