Exception handling in CE Visual Composer 7.1

Hi,
I have modeled a CAF Business Object and a custom Find operation which looks for a custom key. After that, I have exposed that operation as Web service and consumed it in Visual Composer. It is working perfectly as long as the search key exists in the Business Object backend table. When an arbitrart search term e.g. 1234 which does not exist is given, an error message is displayed and the program logic is halted.
Error occured while executing the service: Error in connection: Could not execute Web service, consult your administrator
My requirement is that, is it possible for me to display a custom message such as "The ID does not exist. Please enter a valid ID".
Besides, is it possbile to bypass this service call if it is not working? In my scenario, this service is actually used to search for any existing data for a selected Customer. If there is no data, the user can proceed with a new definition. So, the above mentioned exception blocks the program flow and the user is not able to continue.
Thanks in advance for any suggestions or ideas.
Regards,
Joon Meng

I am not aware exception handling features of VC but instead of raising SOAP Fault you can also transfer log message which is user friendly to display.
Another thing, instead of throwing exeption handle it inside try block so that program do not halt abruptly but gracefully. It is always possible to bypass existing service call like you said if output of service is not input of another.
In other word do not map output directly but on the "Next" event of button which enable you to goto next screen to work.
Regards,
Gourav

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