...

 {"message": "STORAGE_UNIT_DOESNT_EXIST"}

If the scope doesn't exist and the delete policy was MUSTEXIST, a 400 response code with a DELETED_SCOPE_DOESNT_EXIST message is returned.

 {"message": "DELETED_SCOPE_DOESNT_EXIST"}

Delete If

Deletes a content record scope based on a comparison criteria (X field is equal (EQ), greater than (GT), lesser than (LT) or not equal (NEQ) to a value).

...