Issue setting field to readonly

[Mark9]

I'm trying to toggle the read-only property of the Next Step field (u_next_step) on the Service Record screen.  I have tried two approaches (UI Policy and Client Script) and neither approach works.  I know the code is being executed as I have added log statements to the console.  I also in the same code set sys_created_on to read-only (just to see that it works) and that field is being set to read-only while Next Step is not.  Both fields are initially editable in the form design.   When I create a new SR, the form loads and the Created field is grayed out but the Next Step field is not.

Here is the client script code:

function onLoad() {

    console.log('onLoad client script triggered');

    if (g_form.isNewRecord()) {

        console.log('This is a new record. The u_next_step field will be read-only.');

        g_form.setReadOnly('u_next_step', true);

        g_form.setReadOnly('sys_created_on', true);

    } else {

        console.log('Client Script: This is an existing record. Making the u_next_step field editable.');

        g_form.setReadOnly('incident.u_next_step', false);

        g_form.setReadOnly('sys_created_on', false);

    }

}

And here are the console statements

I'm sure this should be really simple, but I can't figure it out. Any help would be greatly appreciated. Thx.

[Mark Roethof]

Hi there,

Have you verified the fields are not mandatory?

[Mark9]

Hi Mark,

No the field is not mandatory.

Cheers, Mark

[Vrushali Kolte]

Hello @Mark9 ,

If the Next Step field (u_next_step) has been marked as Mandatory, then the field will not become read-only.

This is the servicenow behaviour that if field is mandatory and it does not have any value then you cannot make it read-only.

If this is the case then you can first mark the field mandatory false and then make it read-only as below :

g_form.setMandatory('u_next_step', false);
g_form.setReadonly('u_next_step', true);

 If my answer solves your issue, please mark it as Accepted ✔️ and Helpful 👍 based on impact.

[Mark9]

Thanks for your reply Vrushali.  It is not a mandatory field but just in case I added the line to set mandatory to false as you suggested, but it still isn't working.