Unable to select sys_attachment as an input on flow action within scopeIssue Go to Flow DesignerSelect application other than globalCreate a new Action.Add an input parameter called Document, select Reference.sys_attachmentNone is found.ReleaseOn all versions that has flow designer plugin installedCausedue to the system property - sn_flow_designer.allowed_system_tablesResolutionThis was done on purpose by internal team so that users will be very careful when updating the action. Please be very careful when using sys_attachments in action and flow. So, its needs to be connected with sys_attachment_doc to work. Open the below property and remove sys_attachment from the property sn_flow_designer.allowed_system_tables. https://<instance_name>.service-now.com/nav_to.do?uri=sys_properties.do?sys_id=66faaabec31213002841b63b12d3ae36Related LinksAs such there property which has a very confusing name sn_flow_designer.allowed_system_tables which in reality is the opposite of its name. (Something we need to change).