Error Level (Magic xpa 3.x)
An Error level logic unit is executed when the corresponding DBMS error is encountered. This logic unit is executed on the server.
The Rollback option that displays a confirmation dialog box cannot be executed on the Rich Client. This means that the first parameter of the Rollback function will be ignored. Also the Message property on the Error Event will be ignored.
So, if you wish to show the user the error, you can use an Async Event (Wait = No). This will cause the event to be executed after the error handler logic is finished.
For more information about Error Handling, refer to the Error Handling section in the Magic xpa Help.