You have opened a task or a checklist item from the Projects, Tasks, or Checklist Items initial view and are on the Objects tab page (see also Opening a Project or Project Version).
1. In the structure tree navigate to the project element whose object link you want to delete.
The system displays all existing object links for this project element in an overview.
2. Select the object link you want to delete and choose Delete, located below the overview.
3. Save your entries.