Getting multiple errors while completing migration batch

I'm performing Gsuite to O365 migration. All mailbox data getting successfully synced to O365 mailbox but at the time completion of batch i'm getting below multiple errors. Error:UnableToUsePrimaryGmailForwardingAddressException/DisallowedForwardingAddressPermanentException/BadRequestWebTransientException/WebException: Error: Couldn‎'t use the primary address as the forwarding address "mailto:bhavesh@aeronutrix.com". Please select a different target delivery domain. --] The requested forwarding address is not allowed. --] The web server responded with a 400 Bad Request error. Uri: https://www.googleapis.com/gmail/v1/users/bhavesh@aeronutrix.com/settings/forwardingAddresses --] The remote server returned an error: ‎(400)‎ Bad Request.