Event ID - 4000

Event Id4000
DescriptionInvalid eItemSource for GroupWise message with Subject '<subject>' for user '<user name>'.
Event InformationA valid source of a message is either the Inbox, Sent Items, personal folders, or another message. The source of this message was not valid, and it will not be migrated. No user action is required; however, if you want to migrate the message, you need to fix the error in the migration files. Use a two-step migration to create migration files. Find the message, fix the error, and then import the files. For more information, see the Exchange online documentation.
Reference Links

Catch threats immediately

We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.

See what we caught

Did this information help you to resolve the problem?

Yes: My problem was resolved.
No: The information was not helpful / Partially helpful.