How to disable mandatory fields

[kmathis]

I have configured mandatory fields for our Change form through UI Policy.   I now need to configure a UI Action to cancel the change.   Upon choosing this Cancel menu option, we are currently prompted regarding the mandatory field requirements.   How can I disable the mandatory fields through this UI Action.   Below is my feeble attempt which is currently not working (I only added one field for testing):

function cancel (){

      if(g.form.getValue('short_description')=="")

              g_form.setMandatory('short_description, false');

}

//Canceled state  

var recordState = current.state.getDisplayValue();  

current.state = 4;

// update all the waiting approval to not longer required  

var gr = new GlideRecord('sysapproval_approver');  

gr.addQuery('sysapproval', current.sys_id);  

gr.query();      

if(gr.next()){  

do {  

      if(gr.state == 'requested') {  

          gr.state = 'Canceled';  

          gr.comments = 'The change has been canceled. Your approval is no longer required.'  

          gr.update();  

      }  

gs.eventQueue("change.approver.canceled", gr, gr.approver.getName(), gs.getUserName());  

} while (gr.next())  

}  

current.approval = 'Canceled';

moveToCancel();

      function moveToCancel(){

              current.update();

      action.setRedirectURL(current);

                      current.moveTo("Canceled")

}

[kshaw]

Hoping for some new help on this issue.

Want to limit the "Update" button to ignore mandatories only for a specific Service Catalog. This would be applicable for both RITMs (sc_req_item) and TASK (sc_task) of those items. Don't want to change the rest of the requests used by ITS in the instance.