How to create an onSubmit Client Script to verify the mandatory variable is not empty

This article details the steps to implement checking if a mandatory field is populated before order submission.

This is also the recommended solution for mandatory variables on Service Catalog RITM records intermittently created with empty values.

1. Navigate to Service Catalog > Catalog Policy > Catalog Client Scripts. A list of current custom catalog client scripts appears.
2. Click New.
3. Fill in the fields:
   • Active: Checked
   • Applies on a Catalog Item view: Checked
   • Type : onSubmit
     After selecting onSubmit, the script section will be pre-populated with function, do not delete this. 
   • Script:
     function onSubmit(){
        var mandatoryVar = g_form.getValue('<mandatory variable name>');
        if (mandatoryVar ==""){
           alert("<variable name> is mandatory. Please populate the variable and resubmit the request.");
        return false; }
     }
4. Fill in the remaining fields as needed: 
   • Name : (any name)
   • Applies to : (does the mandatory field belong to a variable set or catalog item?)
   • Catalog item or Variable set: (select the catalog item or variable set that owns the mandatory field)
   • UI Type : (will this apply to policy apply to Desktop, Mobile or Both?)
   • Applies on Requested Items : (check if you want the policy to also apply on requested item view)
   • Applies on Catalog Tasks :(check if you want the policy to also apply on catalog task view)
5. Click Submit.

• Catalog Client Scripts
• Client Scripts