You can program XRC calls to the z/OS® SDM application system data mover programming interface. ANTRQST and ANTRQSTL macros – call to the system data mover API contains information on the ANTRQST environment, programming requirements, common invocation parameters, input and output register information, followed by the macro syntax and individual parameter descriptions. An example of the ANTRQST macro in assembler follows the descriptions of the associated return and reason codes.