When running the merge wizard with Notes Migrator for Exchange (NME), the following error is presented:
12:36:20 ERROR: [7437-1-196-00000000] Unable to enable object. Reason: 'Specified method is not supported.
12:36:20 Command Executed: Enable-MailUser -DomainController "xxxxxx.domain.com" -Identity "CN=Axxxxxx,OU=Bxxxxx,DC=xxxxx,DC=com" -ExternalEmailAddress "SMTP:email@example.com"'
12:36:20 PSHME.dll - Enable PSH object: 1
1- Add the domain to the UPN value of the Active Directory account
2- Rerun the merge process.