My application creates, edits, modifies and deletes SAP users using BAPI's. I create users using BAPI_USER_CREATE1 and I view them using BAPI_USER_GET_DETAIL. But if, during the creation, I am able to assign to a user a reference user, I am unfortunately unable to retrieve the "reference user" of a user. I use an SAP R/3 release 4.6C with SAP_ABA 46C. The BAPI_USER_GET_DETAIL of my ABAP version doesn't seem to return the reference user. Is there any other means to retrieve this information?