If you chose to not create a Net.Data initialization file, the System language environment is enabled by default. There is no additional configuration required.
If you created an initialization file, and you want to use the System language environment, add the following configuration statement in the initialization file.
ENVIRONMENT(DTW_SYSTEM) /QSYS.LIB/QTCP.LIB/QTMHSYS.SRVPGM ( )
For information on the Net.Data initialization file, including environment configuration statements, see Configuring Net.Data.