mulitple cutover errors
i am running a cutover migration from exchange 2016 to exchange online and have been facing the following; 1. Error: MigrationProvisioningPermanentException: Failed to update one of the recipient properties. --> Couldn't find a user or contact with identity "/o=company/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=company080". --> Failed to update one of the recipient properties. --> Couldn't find a user or contact with identity "/o=company/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=company080" 2.Error: UnexpectedTargetRecipientTypeException: An unexpected recipient of type 'Contact' already exists in the target environment. Expected a recipient of type 'Mailbox'. 3.Error: TooManyTransientFailureRetriesPermanentException: The job encountered too many transient failures (61) and is quitting. The most common failure is MapiExceptionCallFailed with the hit count 59. --> MapiExceptionCallFailed: Unable to make connection to the server. (hr=0x80004005, ec=2614) 1.49064:03000000, 16.59431:8F000000, 17.34855:360A00003800000000000000DD00000000000000, 4.39070:360A0000, 4.59505:360A0000, 20.50544:140FD6911600401024080000, 20.51056:010F8088AE0F101003000000, 4.52080:360A0000, 0.51152:00000000, 4.52465:360A0000, 0.60065:00000000, 4.33777:360A0000, 0.59805:06000000, 4.52487:360A0000, 0.19778:00000000, 4.27970:360A0000, 0.17730:08000000, 4.25922:360A0000 4. Error: MigrationProvisioningPermanentException: The proxy address "SMTP: account" is already being used by the proxy addresses or LegacyExchangeDN. Please choose another proxy address. --> The proxy address "SMTP:account" is already being used by the proxy addresses or LegacyExchangeDN. Please choose another proxy address. Any help would be great