| LS | Title | From | To | Approval date |
| SG2-LS117 | LS/r on the consent of Recommendation ITU-T M.3369 (ex. M.cefno): "Cost-effectiveness evaluation framework for network operation" and M.3186 (ex. M.nocm-SID): “Shared information and data model (SID) for network operation cost management” (reply to SG12-LS56) | SG2 | TM Forum; SG3; SG12; | 2024-06-28 |
| SG12-LS56 | LS/r on progress of draft Recommendation M.cefno "Cost-effectiveness evaluation framework for network operation" (reply to SG2-LS89) | SG12 | SG2; | 2024-04-25 |
| SG2-LS89 | LS on progress of draft Recommendation M.cefno "Cost-effectiveness evaluation framework for network operation" | SG2 | SG12; | 2023-11-17 |
