To define USS messages to MMS:

1. Create message skeleton files for MMS. These files define the user messages (USSMSG00 – USSMSG14) in the languages required for your installation.
2. Define data sets to MVS™.
3. Run the message compiler.
4. Update the parmlib.
5. Activate MMS.

For more information about message translation using MMS, see Message translation using the MVS Message Service. For information about performing these functions, see z/OS MVS Planning: Operations. For information about the format of message skeleton files used for language translation, see the z/OS MVS Programming: Assembler Services Guide.

When defining a USS message in a message skeleton file, use the substitute tokens &1., &2., and &3. for the first, second, and third variable data fields for the message. These tokens correspond to the %(1), %(2), and %(3) syntax of specifying variable data that is used for the TEXT operand of the USSMSG macro instruction.