In
		  a Microsoft Exchange Server 2007
		  environment, you try
		  to move items
		  to
		  a managed
		  custom folder in
		  Outlook Web Access (OWA) that
		  is running in
		  online
		  mode or
		  in Microsoft Office Outlook running in cache mode. If
		  the OWA or Outlook is running in online mode, you receive the following error
		  message:
Some items could
		  not be moved. This may be because the folder has reached its size
		  limit.
You
		  do
		  not receive
		  this error message in OWA
		  or in Outlook that is running in
		  cached mode.
		  Additionally, the items
		  that you tried to move disappear from the source folder. Also,
		  the next time that you log on to Outlook, you
		  may find a
		  synchronization error in the 
Synch Failures folder
		  in your mailbox. 
If,
		  you try to move your mailbox,
		  you receive the following error message:
[<Date/Time>] [0] [ERROR] Error was found for <mailbox> (<address>) because: Error occurred in the step: Moving messages. Failed to copy messages to the destination mailbox store with error: 
MAPI or an unspecified service provider.
ID no: 00000000-0000-00000000, error code: -1056749164