Knowledge article states

A versioned knowledge article can be in one of several states as it progresses through the creation cycle.

State Description
Draft The article is in the process of being created.
Review The draft version of the article is sent to reviewers to approve or reject.
Published The article is approved and published. When the state of an article changes to Published, the state of any previous published versions of that article changes to Outdated.
Pending retirement The published article is selected for retirement, pending approval.
Retired The published article is retired.
Outdated A more recent version of the article has been published. End users can read published articles as well as the outdated versions.