Error Message:

One or more selected users have Logon Hours settings which are not specified in days-per-week or hours-per-week. You may edit these settings, but they will be initially reset. Do you wish to reset and edit these Logon Hours settings?

Explanation:

You have edited the Logon Hours for a group of users directly through the API. If you choose to reset these Logon Hours now, all of the selected users will be allowed access to the server at all times.

User Action:

If you wish to reset the Logon Hours for the specified users, click OK.