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.
, the change triggers a review process. A review process is an automated business process that notifies business managers when changes are ready for their review.
The type of review process depends on the configuration whether the default review processes are in use. There might be different review processes for creation, edits, merges, and unmerges.