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 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.