ODM | Another object with the same Name or UserPrincipalName or PrimarySmtpAddress already exists; Map the target account before migrating (4381998)

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ODM | Another object with the same Name or UserPrincipalName or PrimarySmtpAddress already exists; Map the target account before migrating
Description

Performing account migration with ODM after mapping getting the error

Another object with the same Name or UserPrincipalName or PrimarySmtpAddress already exists; Map the target account before migrating.
Cause

Possible cause 1

Target account is a guest account

Possible cause 2

Target account is a guest account that holds PrimarySmtpAddress of a user acccount to be created
Resolution

ODM account migration only supports migrating a user as a regular user. It does not support migrating a user as an external or guest user in the target environment.

Verify and double check the required UserPrincipalName or PrimarySmtpAddress is not existed on a different account that are not intended
Additional Information

User to Guest Mapping is still applicable

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