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Exchange 2013 mailbox move between domains

One of the mailboxes fails but it seems in the log that all messages are copied but some errors confuses me. Does anyone know what these errors says?
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itpartner_danmark

8/22/2022 - Mon
SOLUTION
Mal Osborne

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Thanks. How do I hunt down the exact failed messages
Mal Osborne

Not sure of a great way to do that. You can compare item counts to determine which folders have skipped items, then start narrowing it down by alphabetical or date counts. Usually, the "before" mailbox will have some items that cannot be opened, they will be missing after that move.  Nothing get "lost", it just goes from there but unacessible, to not there at all.  In nearly all cases I have seen, the missing items are inconsequential, and the users don't notice thay are gone. Calendar entries seem to be a commom one.
Dinesh Babu

Hi,

These corruptions are common while moving mailboxes from one DB to other, normally those corrupted items are mostly generated by clients than server. The reasons may vary time to time, sometimes older calendar entries , sometimes corrupted rules, sometimes when two or multiple clients trying to access same item (mostly activesync and outlook client).
its not bad to mention "BadItemCount" while moving databases. 10 - 20 is a good number. but still you want to eliminate more corrupted items then you need to use "AcceptLargeDataLoss" parameter.
New-MoveRequest -Identity "user@domain.com" - TargetDatabase "Target_db" -BadItemcount "15"

Thanks
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William Peck
itpartner_danmark

ASKER
in line two of my screendump it says "Copying messages is complete" so I suppose all emails are sucessfully migrated. But all the errors goes for folders or am I reading it wrong?
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Dinesh Babu

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Thanks.