Solution : https://service.sap.com/sap/support/notes/1632088 (SAP Service marketplace login required)
Key words :
default change user action, action change user, provisioning action column, terms access control 2010, existing assignments select, provisioning action, existing assignments, access request, symptom create, request type
Related Notes :
1607067 | Master Note for SAP Access Control 10.0 - Support Pack 6 |