On-change Client script in Loop in Servicenow

[abirakundu23]

Hi All,

I wrote one client script on change based on the if condition status could not be change & its will through info/error message & status will back to "in progress" state instead of changing any status.

function onChange(control, oldValue, newValue, isLoading, isTemplate) {

   if (isLoading || newValue === '') {

      return;

   }

   //Type appropriate comment here, and begin script below

var ticket = g_form.getValue('type');

alert(ticket);

var approv = g_form.getValue('approval');

alert(approv);

if (ticket == "871c5d5e87b3e9140811646e8bbb3530" && approv == "not requested")

{

alert("Hello world");

g_form.addErrorMessage("status could not change");

g_form.setValue("state","In progress");

alert("Hello world123");

}

}

Info/Error message not showing & alert is showing as a loop

[Ahmmed Ali]

Hello @abirakundu23 

Try modifying below line 

if (tickettype == "871c5d5e87b3e9140811646e8bbb3530" && approv == "not requested")

to 

if (tickettype == "871c5d5e87b3e9140811646e8bbb3530" && approv == "not requested" && oldValue != newValue)

Thanks,

Ali

[abirakundu23]

Hi @Ahmmed Ali ,

Its not working after adding the condition. Its working same like going on loop.

[Ahmmed Ali]

Hello @abirakundu23 

One simple solution which does not require any code would be to have an UI policy created with your condition and make the state field read-only. 

You can also add the field message for the state field saying state cannot be changed.

Thank you,

Ali

[abirakundu23]

Hi @Ahmmed Ali ,

Actually we made read only on status but assigned to not able to change any status that should be a blocker.