I have finally installed the Subscription Management Tool 11 SP2 on our SLES 11 sp2
during the installation the SMT was asking for user name and password to connect to the server and get updates,
the user id and password were wrong, so I skipped this and finished the installation
after doing some research I found that for the SMT you have a separate userid and this you can find on your online account.
so I went back in yast and changed the smt configuration with the correct username and password, this worked and I
can get the SMT updates from the internet,
however, when I try to go to yast and go to software repository , I get this error:

An error occurred during repository initialization.
Valid metadata not found at specified URL(s)
History:
Unknown error reading from
'https://nu.novell.com/repo/$RCE/SLE11-SMT-SP2-Pool/sle-11
-x86_64?credentials=NCCcredentials'
SKIP request: User-requested skipping of a file
Permission to access
'https://nu.novell.com/repo/$RCE/SLE11-SMT-SP2-Pool/sle-11┬ │
-x86_64/repodata/repomd.xml?credentials=NCCcredentials'denied.

Visit the Novell Customer Center to check whether your │ │
registration is valid and has not expired.
I think the issue is that the first time I installed SMT , I filled in an incorrect username and password and it seems yast is still using the old incorrect password, because SMT is working fine and I can see the updates
where can I change this ?