8. The expert of IWG SLR presented draft amendments to UN Regulations Nos. 148, 149 and 150 that introduce summary documents to be placed in the electronic Database for the Exchange of Type Approval documentation (DETA) to support the use of the Unique Identifier (UI) (ECE/TRANS/WP.29/GRE/2022/10, ECE/TRANS/WP.29/GRE/2022/11 and ECE/TRANS/WP.29/GRE/2022/12). GRE pointed out that a template summary document should be developed by IWG DETA and endorsed by WP.29. Awaiting WP.29 and/or IWG DETA guidance on the matter, GRE decided to continue consideration at the next session.

9. GRE noted that the use of UI for a particular UN Regulation should only be possible when the following two conditions are met:

• the corresponding summary document has been defined in the Regulation; and
• DETA is providing access to the Summary Document.

10. To stress these requirements, the expert from EC proposed an amendment (GRE-87-24-Rev.1). GRE adopted the proposal and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as a draft Supplement to the 00 and 01 series of amendments to UN Regulations Nos. 148, 149 and 150.

11. In the context of possible replacement of traditional approval markings by UI, the expert from CITA presented a proposal with the aim to ensure the availability of sufficient information on the device for periodic and roadside inspections (ECE/TRANS/WP.29/GRE/2022/13 and GRE-87-07). GRE agreed to revert to this proposal at the next session.

12. GRE noted a request of the Informal Working Group for Electronic Database for the Exchange of Type Approval documentation (IWG DETA) to provide clarity on the UN Regulations for which the Unique Identifier (UI) markings may be applied (GRE-88-02-Rev.1 and GRE-88-03-Rev.1). The expert from the International Motor Vehicle Inspection Committee (CITA) recalled its previous position on the need for additional markings in case of UI, to ensure the availability of sufficient information on the device for periodic and roadside inspections (ECE/TRANS/WP.29/GRE/2022/13, GRE-87-07). Some experts pointed out that additional markings would run counter the very idea of UI.

13. To review UN Regulations under its purview for the purposes of UI (GRE-88-26), GRE made the following classifications:

1. Obsolete device UN Regulations that had been frozen in the course of two freezing exercises;
2. New simplified device UN Regulations Nos. 148, 149 and 150;
3. Installation UN Regulations Nos. 48, 53, 74 and 86;
4. Light sources UN Regulations Nos. 37, 99 and 128; and
5. Standalone UN Regulations Nos. 10, 45 and 65.

14. GRE agreed that UI could be used for the group (b) above, but definitely not for (a) and probably not for (c) and (d). For the group (e), GRE invited IWG SLR and the Informal Working Group on Electromagnetic Compatibility (IWG EMC) to prepare recommendations. Finally, GRE decided to revert to this topic at the next session, including the issue of additional markings.