26. The expert from the Netherlands introduced GRSP-74-10 which requests guidance on Supplement 10 to the 03 series to UN Regulation No. 129 (ECE/TRANS/WP.29/2023/120). He explained that the proposal had been adopted by WP.29 at its November 2023 session to clarify the existing requirement on “one-belt route”. He recalled to GRSP that the proposal aimed for a better understanding of Type Approval Authorities to guarantee a prevention of misuse by end-users of the product. He added that introducing clarification through the supplement would lead to uncertainty on previous type approvals granted in the same series of amendments but based on different interpretations. He added that the same uncertainty would be reiterated for extensions of these type approvals preceding the supplement. He therefore requested experts to provide feedback for discussion to Type Approval Authority Meetings (TAAM). The expert from CLEPA confirmed the relevance of this issue for GRSP. GRSP recommended its experts to be increasingly vigilant on this type of matters. The Chair of GRSP was requested to highlight this issue in his intervention at the March 2024 session of WP.29.