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Deleting Open Activities in the DTR Web
UI 
Since open activities can be a problem if they cannot be found any longer - for example if a developer PC crashed - there is a function in the DTR Web UI to delete such activities (ADMINA permissions are required).
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1. Open the following URL: http://<host>:<port>/devinf and choose the Design Time Repository link.
2. Choose the system-tools link.
3. Choose the Activity search.
4. Navigate to the workspace that contains an open activity that is no longer needed and cannot be deleted by its owner.
5. Search for open activities.
6. For the activity that is no longer needed, choose Revert this activity.
7. Select the Delete the activity resource also checkbox and confirm with Revert.
The activity is reverted and deleted.