To use internal translation:

1. To support a language other than U.S. English, first define a language skeleton file to MMS. The language skeleton file must have the language code or language name that will be specified by the logical unit. If the required language skeleton file does not exist when the USS command is entered and the MMS is active, the USS command will be rejected. For TSO/VTAM, default U.S. English messages are issued if the required language skeleton file does not exist.
2. An LU must explicitly request that translation be performed before messages will be translated internally.
   • For USS, the LANG operand on USS commands determines the language.
   • For TSO/VTAM, the language can be determined from the LANG or LANGTAB operands (the language information is provided on the CINIT) or by the TSO PROFILE command with the PLANG operand.