Standard: Article 6.4 validation and verification standard for projects (v.04.0) Open English PDF 0.69 MB Symbol A6.4-STAN-AC-003 Publication date 09 Oct 2026 Document type Standard Author UNFCCC. Article 6.4 Supervisory Body Topic Mitigation actions and commitments Notes Previous versions: ver. 03.0 Revision adopted: SBM 018, Annex 8, 10 Oct. 2025. ver. 02.0 Revision adopted: SBM 016, Annex 8, 16 May 2025. ver. 01.0 Initial adoption: SB 008, Annex 5, 2 Nov. 2023.