when trying to use the sample SDK (DmsApiSample.java)
When I try to login with user "Siteminder" I get "Invalid credentials" because I don't really know this user's password.
When I try to use some other admin user configured in WAM UI, I get "Unknown administrator".
Just an add on on the above.
Once you created the new administrator in the AdminUI with the correct privilleges, you will have to modify the the properties/smjsdksample.properties and fill the ADMIN_NAME and ADMIN_PWD to be used with the sample SDK