ServiceNow Certified Application Developer (CAD) Training Practice Test

g_form.getReference is a GlideForm API used in the classic form UI to load a reference field’s value asynchronously. In Service Portal, the client scripting environment does not include g_form, so that method isn’t available and cannot work there. To get reference data in the portal, use a GlideAjax call to a Script Include (or fetch the data server-side in the widget and expose it to the client) and bind it to the widget’s model.