If you have following error while migrating users with ADMT 3.2 tool, probably target domain have missing schema configuration.
WRN1:7561 ADMT could not migrate some properties for this object type (user) due to schema mismatches. Please refer to the Schema Section in the migration log for a complete listing. The Schema Section will be available once object migration is complete.
WRN1:7857 Could not copy following properties for ‘CN=user’.
showInAddressBook = CN=New Global Address Book,CN=All Global Address Lists,CN=Address Lists Container,CN=mydomain,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mydomain,DC=com, … A constraint violation occurred.
– Set password
Basically, If you have Exchange Server on your source organization and haven’t on target organization, you will get this error/warning.
After, you run (Exchange) Setup.exe /forestprep and /domainprep on Target Domain, you will successfully migrate users Source domain to Target domain.