| CANCELLED | The action is withdrawn from the Programme and the ITT, which was already issued, is cancelled |
| COMPLETED | The proposals have been received |
| DELETED | The action is withdrawn from the Programme before any ITT has been issued |
| INITIATED | The ITT is under preparation |
| INTENDED | The action is planned but the internal preparation of the ITT has not yet started |
| ISSUED | The ITT has formally been published |
| ON HOLD | The action is pending decision of the Programme |
| POSTPONED | The action is delayed until following year(s) |
| RE-ASSIGNED | A change has occurred in terms of : either responsibility (responsibility for the action being switched to another service) or type of tender either at the ESA Management initiative or in execution of an AC/IPC decision, for cases qualified for procurement proposals following the submission to these Committees |
| TO BE RE-ISSUED | ESA is considering to re-publish the ITT |