Here is your next installment in the troubleshooting hybrid migrations blog series! See:
Exchange Hybrid Migrations: More Than Just a Pretty Face (Part 1)
Digging Into Hybrid Migration Move Rep...
Updated Oct 29, 2020
Version 2.0
Blog Post
this is a cross tenant mailbox migration (365 E3 to 365 Business Premium)
Why is my migration failing? MigrationCSVRowValidationException: The migration user type for 'email address removed for privacy reasons' is not correct. Please ensure it has RecipientTypeDetails:MailUser.
user was created as contact, mail user on target tenant with same attributes as source tenant