Document.CanCheckin (Word)
True if Microsoft Word can check in a specified document to a server.
To take advantage of the collaboration features built into Word, documents must be stored on a Microsoft SharePoint Portal Server.
Sub CheckInOut(docCheckIn As String)
If Documents(docCheckIn).CanCheckin = True Then
Documents(docCheckIn).CheckIn
MsgBox docCheckIn & " has been checked in."
Else
MsgBox "This file cannot be checked in " & _
"at this time. Please try again later."
End If
End Sub