Reference field is showing sys_id instead of display value but when i reload the form it is working

[Satyapriya]

Hi All,

When I am updating the install base item in the case form then the service and ci  should get updated in the related incident form.

In the workspace when I open both the case and incident form and after updating the install base the service and ci are showing the sys_id but when I reload the incident page then it is showing the display value means it is working when I am reloading the page.

I have written one After BR on Case table 

  fetchServiceAndCi();

    function fetchServiceAndCi() {

        var getChild;

        var getParent;

        var incDetails = current.incident;

        var grCIID = current.install_base.configuration_item.getDisplayValue();

        var getCI = new GlideRecord('cmdb_ci');

        getCI.addQuery("name", grCIID);

        getCI.query();

        if (getCI.next()) {

            var getCIClass = getCI.sys_class_name;

            if (getCIClass == "cmdb_ci_service_discovered") {

                var service = getCI.sys_id;

                var getConfigitem = new GlideRecord("cmdb_rel_ci");

                getConfigitem.addQuery("parent", service);

                getConfigitem.query();

                if (getConfigitem.next()) {

                    getChild = getConfigitem.child;

                    getParent = getConfigitem.parent;

                }

            } else if (getCIClass == "cmdb_ci") {

                var getConfigItem = getCI.sys_id;

                var getService = new GlideRecord('cmdb_rel_ci');

                getService.addQuery("child", getConfigItem);

                getService.query();

                if (getService.next()) {

                    getParent = getService.parent;

                    getChild = getService.child;

                }

            }

            updateIncDetails(getChild, getParent, incDetails);

        }

    }

    function updateIncDetails(getChild, getParent, incDetails) {

        var grInc = new GlideRecord('incident');

        grInc.addQuery('sys_id', incDetails);

        grInc.query();

        if (grInc.next()) {

            grInc.business_service = getParent.toString();

            grInc.cmdb_ci = getChild.toString();

            grInc.update();

        }

    }