42. The expert from Japan, Ambassador of IWVTA, informed GRSP that the Group was developing the 06 series of amendments to UN Regulation No. 0. which had been adopted at the November 2023 session of WP.29. He noted that the series reflected the latest series of amendments to UN Regulations Nos. 12, 127 and 135, which had entered into force in January 2023. He reminded GRSP about GRSP-72-07-Rev.1 on interpreting the preceding series of amendments (singular or plural) mentioned in the transitional provisions of UN Regulations. He informed GRSP that the issue had been discussed in IWVTA IWG, with the intent of a resubmission at the March 2024 session of WP.29. He finally informed GRSP that the IWVTA IWG members at the June 2023 session of the IWG did not have objections or comments on the splitting of UN Regulation No. 16.

43. GRSP resumed discussion on the Unique Identifier (UI) marking. The expert from CITA, introduced GRSP-74-26, to clarify the concept of UI. The expert from the Netherlands expressed the general opinion that UI was needed in the UN Regulations under the remit of GRSP. He therefore suggested, as previously stated by the expert from Spain (see ECE/TRANS/WP.29/GRSP/73, paragraph 55), that amending the 1958 Agreement would be more viable than amending each UN Regulations to prohibit UI. The expert from OICA agreed with the expert from the Netherlands. Finally, GRSP adopted GRSP-73-58 tabled by the experts from CITA and agreed to send it to the IWG on Database for the Exchange of Type Approval documentation as the final deliberation of GRSP on this subject.