Deleting a Program Indicator

Greetings,

I created a program indicator that counts cases with 'duplicate" data element either No or Blank, in order to retrieve only non-duplicate cases, since then, we’re having an error: Error in event creation. An error occurred, please check the import summary, with a response from the server.
When I tried deleting the program indicator: the statement couldn’t be executed.
So, is there any way where I can delete this program indicator?

Sincerely,

What was the error while you try to delete program indicator? did you delete all the data for which program indicator would have got fired.