Unsupported features in Service Portal Service Portal is an alternative presentation layer for the platform. As such, not all features of the platform are extended to Service Portal. Consider your full application and the abilities of Service Portal before making considerable investments. ServiceNow will continue to enhance Service Portal over time. Not currently supported Domain separation Approvals with e-signature No plans to support @ Mentions Click-through/pop-ups UI macros Formatters UI actions marked as Client Nested container Catalog variables Some client scripting globals are also unavailable in Service Portal. For more information, see Service Portal and client scripts. Service Portal and client scriptsYou can use client scripts and catalog client scripts in the Service Portal if the UI Type is set to Mobile/Service Portal or All. Client scripts and catalog client scripts are used with the Form widget and SC Catalog Item widget, as opposed to a widget client controller.Unsupported form scripts for Service PortalBecause Service Portal doesn't use Jelly, not all form customizations are available.