It is possible to save a Content Wizard with one or more invalid definitions. The error message of the Content Wizard Editor will be stored with the revision and shown in the related description pane. The revision of an invalid Content Wizard is tagged as failed.
When you unlock an invalid Content Wizard revision, it will not be tagged as [current] and it cannot be marked as [accepted] and therefore also cannot be promoted to the status [published]. It is not possible to use such an invalid Content Wizard in an ITP Model.