| LS | Title | From | To | Approval date |
| SG20-LS16 | LS/r on the work item on Digital twin - Maturity model and guidance for a maturity assessment (reply to ISO/IECJTC1/SC41-298/NP and ISO/IECJTC1/SC41WG6-N151) | SG20 | ISO/IEC JTC1/SC41; | 2022-07-28 |
| ISO/IEC JTC1/SC41-298/NP | LS on the work item on Digital twin – Maturity model and guidance for a maturity assessment | ISO/IEC JTC1/SC41 | SG20; | 2022-07-13 |
| ISO/IEC JTC1/SC41 WG6-N151 | LS on the collaboration on the NP ballot and
future development of the new work item (Digital Twin – Maturity
Model) | ISO/IEC JTC1/SC41 WG6 | SG20; | 2022-06-20 |
