Hi @Chandru R ,
could you help what kind of exact permissions or role the migration account have to be assigned? As per MS article below is given but not role or permission specified..
It's mentioned in the FAQ part of the article that the following two roles are required:
What Exchange RBAC roles do I need to be member of to set up or complete a cross-tenant move?
- Organization Administrator
- Move Mailboxes
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment". Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.