Hi,

As per my understanding I have taken a scenario here,

To check if "caller's manager' and 'assigned to manager' are same on incident form

1)Business Rule-gscratchpad variable which returns assigned to manager

2)Client script running On load on Caller field:

Passing the caller info to Script include and we will get the manager info of caller and validate

Client script(On Load):

function onLoad() {

var user = g_form.getValue('caller_id');
var getNames = new GlideAjax('PortalAjaxUtils');
getNames.addParam('sysparm_name', 'getManager');
getNames.addParam('sysparm_user', user); //Preet

getNames.getXMLAnswer(getAnswer);
}

function getAnswer(answer) {
answer = JSON.parse(answer);
if (g_scratchpad.user1 == answer.manager) {
alert('yes assigned to manager and caller manager are same');
}

}

3)Script Include which will return caller manager to client side

getManager: function() {
var user = this.getParameter('sysparm_user');
var retRes = {};

var gr = new GlideRecord('sys_user');
gr.addQuery('sys_id', user);
gr.query();
if (gr.next()) {
retRes.manager = gr.manager + '';

}
return new JSON().encode(retRes);
},

type: 'PortalAjaxUtils'
});

It prints yes,if assigned to manager and caller manager are same:

Please mark the answer correct and helpful ,if it resolved your issue. Feel free to ask questions if you have any.

-Krupa