An exception occurred when a system reference was expanded in the Tree View.
            
            
               
               
               - User Response:
 
               
               - See the message under "Reason:" in the message dialog.
 
               
               
               
               - Model Administrator Response:
 
               
               - Check the server logs for more information.
                  Validate that the REXX TAULAPPL and TAUZCAPP respectively work correctly.