I had the same problem and all you can do is to uninstall the API version
on your TSM client and re-install the latest.
This happens when you install an older API version than that you already
have.

Hope this will help.



                                                                                
                                         
                    Diciommo Fabio EDS                                          
                                         
                    <fabio.diciommo.eds@       To:     ADSM-L AT VM.MARIST DOT 
EDU                                              
                    TESORO.IT>                 cc:                              
                                         
                    Sent by: "ADSM: Dist       Subject:     Downlevel client 
code version                                
                    Stor Manager"                                               
                                         
                    <ADSM-L AT VM.MARIST DOT ED                                 
                                                
                    U>                                                          
                                         
                                                                                
                                         
                                                                                
                                         
                    25/02/2002 06:47 μμ                                         
                                         
                    Please respond to                                           
                                         
                    "ADSM: Dist Stor                                            
                                         
                    Manager"                                                    
                                         
                                                                                
                                         
                                                                                
                                         




Are you experienced about this problem:

On client side:

25/02/02   16:34:22 cuSignOnResp: Server rejected session; result code: 57
25/02/02   16:34:22 sessOpen: Error 57 receiving SignOnResp verb from
server
25/02/02   16:34:22 ANS1357S Session rejected: Downlevel client code
version

On server side:

Inside client parameters, on my TSM rel. 4.2.1.9, I see with much surprise
client Platform is Win2K ( Client OS level 5 ), but client is AIX platform.
I tried to update the node, but I can't modify platform type field.
How can I do ???
Thanks to all.

Fabio