New-MigrationBatch -Name "May28.Batch" -CSVData ([System.IO.File]::ReadAllBytes("c:\migration.batch\May28.Batch.csv")) -local -notificationemails xxx@xxx.com -baditemlimit 100 I am getting:Warning: the subscription for the migration user xxx couldn't be loaded. the following error was encountered: couldn't find a move request that corresponds to the specified identity '5dc......'  I have found nothing which indicates it is the solution. Please I am going into migration and need some assistance.many thanks

Hello

tip: get-MoveRequest -ide xxx |Remove-MoveRequest
and try again move mailbox
if have more dc try add same dc with -DomainController

Hi -eee,

As Sneff mentioned, you can try to remove the problematic user's move request and try again.

In addition, you can also move the problematic user's mailbox separately and check if the issue persist.

Best regards,

Also, any specific article you are following to accomplish migration task ?

If the issue still persist, you may also try using this available automated solution (http://www.exchangemailboxmigration.com/) while need to move users mailboxes from old exchange server to upgraded one.

More information.   The Warning appears when New-BatchMigration is run or when you create a new batch migration in the EAC and it is for all users who are part of the batch.  However, if you use the new-moverequest, the warning does not appear.    and the other piece is even though I get the warning, the moves complete. sneff you mentioned settings same dc or you could do same gc and one other thing I read was to run prepare domain again. I do believe it is an AD issue as opposed to Exchange.  and this just started happening and nothing nothing has changed.

many thanks to all and sneff I will give mark you as the answer

but if either of you have other suggestions, please let me know