Mailbox not found error when restoring source to registered target online Exchange server at the top level (4228864)

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Title

Mailbox not found error when restoring source to registered target online Exchange server at the top level
Description

An error occured while processing the object "" Details: The mailbox '' was not found in the target domain.
Cause

RME uses msExchMailboxGUID attribute to match mailboxes stored in backups with the target users mailboxes. If the source and target attribute does not match, RME reports that the user is not found.
Resolution

Ensure the Source and Target msExchMailboxGUID match.
WORKAROUND
Restore by specifically selecting the source and target mailbox.
1. Select the Source Mailbox and click Restore
2. Select to restore to an online registered target storage
3. Expand the Store, and drill down and find the mailbox and restore directly to the mailbox instead of at the top level.

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