If you released a task of a transport by mistake and you want to re-open it back you can achieve this if you follow steps described in this short article
- Run TCode SE38
- Execute report RDDIT076
- In the selection screen enter the name of the task you want to re-open
- Execute (press F8)
The transport task that has been released will be displayed with letter R in the Status column. To revert this task back to modifiable (un-released) just double click on the task name, click on the Change button, replace letter R (released) with D (modifiable) and save your changes.