The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
Effective in version 6.1, you can connect to the ILM repository with a user name that is different from the schema name that owns the tables.
Previously, you could use different user and schema names to connect to the source repository. However, to connect to the ILM repository, you could only use the repository schema name.