In many callable services, mapping macros map the parameter options. A complete list of the options for each macro is listed in the macro in Macros mapping parameter options.
Most of the mapping macros can be expanded with or without a DSECT statement. The invocation operand DSECT=YES is the default.
AMODE 64 callers using the 64-bit versions of the macros must issue SYSSTATE AMODE64=YES to identify the addressing mode. See z/OS MVS Programming: Assembler Services Reference IAR-XCT for information about the SYSSTATE macro.