How to validate data added on form is already present on third party server by REST outbound message

[Ashwini Jadhao]

Hi,

How to check whether the data filled on catalog item without form submission is already present on third party server through REST message?

I have check user selected in Requested for and the ApplicationRole. ApplicationRole and user present in Third Party server.

For this I have to write onChange client script and need to call script include which contains call to REST message.
But I am not getting how to write script. I have to achieve this on change of user inputs.Could you please help me write script?

[sravya vemula]

@Ashwini Jadhao  Were you able to complete this requirement ? Because I have a similar requirement currently and looking for a solution. 

 Thanks in advance !

[Hitoshi Ozawa]

Not understanding the question.

If the catalog item is filled out without using the form, I'm not sure why and where you're writing the client script.

Client script on Catalog Item is executed only when the Catalog Item form is entered. If the Catalog Item is submitted from an API, client script won't be executed.

To stop the record from being inserted, create a "Before" business rule instead.