If the source server or the target server is not joined to AD, then on completion of Transfer ID, you must join the target server to an Active Directory domain either by using Yast or the command line options.
For more information on performing the steps by using YaST, see Installing and Configuring NSS Active Directory Support in the OES 2015 SP1: Installation Guide.
To use the command line, see Domain Join Tool to Join the OES 2015 Servers to an Active Directory Domain.