This macro requires no parameters. It contains the
macro definitions and naming conventions for the control data set.
The %RMDUPINT macro also defines the &RMDUPDSN macro variable
that contains the data set name that is used in the %RMDUPDSN macro.
For supplied adapters,
the %RMDUPINT macro is automatically submitted in the staging code
when duplicate-data checking is enabled. For user-written adapters,
the duplicate-data checking is not automatically enabled. To enable
duplicate-data checking, in the user-written staging code, specify
the %RMDUPINT macro in front of the staging code.