You must save an object before you can check it in. When you check in an object, the repository creates a new version of the object and assigns it a version number. The repository increments the version number when you check in an object. You must check in an object to purge it.
If you save an object without checking it in, the changes are committed to the repository, and the object remains checked out until you check it in. You can check in objects from the Designer, Workflow Manager, or Repository Manager.
You can also check in an object from the View History, View Checkouts, View Dependencies, and Query Results windows.
To check in an object:
Select the object or objects.
Click Versioning > Check in.
In the Check In dialog box, enter a comment in the comment field
Click OK to check in the object or Apply to All to apply the comment to multiple objects.
When you check in an object, the repository creates a new version of the object and increments the version number by one.