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How to use field/form level validation for DD web service variable

Question asked by Durga Revanth T on May 28, 2020
Latest reply on Jul 27, 2020 by Ahmed Nofal

I want to have a field/form level validation stating that i am fetching account using drop down with web service and i want to have an error message populated if the account is null in the drop down.

 

I  have tried field validation 

<%

String name = request.getParameter("ACCOUNT_ID");

String question = request.getParameter("Sign On /User Id");

String value = request.getParameter("value");

if (value == null ) {

out.println(" Account not available" + question + ", expected (###) ###-####");

}

%>

 

But i dont see any result .

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