You can specify symbols in your message table that resolve to meaningful values. There are several types of symbols that you can use:

• Pre-defined system symbols set by IBM® Health Checker for z/OS® for use in an exception message and that resolve at check runtime. (A very few resolve when you generate your message table CSECT.) See Using pre-defined system symbols.
• Symbols defined in the source message table or setup file that resolve when you generate the CSECT for the message table. See Defining your own symbols for check messages.