Enabling the action to delete observation scores
In the Assessment surveys web definition, you can enable the action to delete observation scores.
Procedure
1. Select the Assessment surveys web definition.
2. At the bottom panel, select Topic score and navigate to the Actions tab on the data panel.
3. Set the Is visible field of the Delete button to Yes.
4. Click Save .
In the Mobile Assessment Surveys , 
delete icon is enabled on the topic score in the Observation details page.
delete icon is enabled on the topic score in the Observation details page.