| Date | Required action |
| 1 November 2026 | Review portfolios;identify formulations requiring recertification, reformulation or withdrawal |
| 1 February 2027 | Begin V4.0 recertification through ZDHC Approved Certifiers - MRSL |
| 1 November 2027 | Complete ZDHC MRSL V4.0 recertification of Gateway-listed formulations; ZDHC MRSL V4.0 certification required for new uploads |
| 1 June 2028 | ZDHC MRSL V3.1-only formulations are archived and unpublished on the ZDHC Gateway; supply chain implementation period ends. |
