In Service Portal, "sysparm_item_guid" does not work. Use g_form.getUniqueValue() instead.Issue In Service Portal, sysparm_item_guid does not work. SymptomsUse of sysparm_item_guid in the client scripts for getting the sys_id of the current catalog item works perfectly fine in Platform UI. However, the same script fails to retrieve sys_id in Service Portal.CauseThe reason the same client script doesn't fetch the sys_id of the current item in Service Portal is because there is not any element called sysparm_item_guid in the Service Portal DOM UI.ResolutionThe client script looks for a parameter, sysparm_item_guid.This parameter is not available in Service Portal. Instead, use the catalog item sys_id. If the requirement is to get the catalog item sys_id in Service Portal, you can use of the following API instead of sysparm_item_guid:========================g_form.getUniqueValue();======================== To learn more about using this GlideForm API, refer to the product documentation.