For callers not running in system key or supervisor state, for function codes 1 and 2, the use of R_proxyserv is authorized by the resource IRR.RPROXYSERV in the FACILITY class. The application server must be running with a RACF® user or group that has at least READ authority to this resource. If the class is inactive, or the resource is not defined, only servers running with a system key or in supervisor state may use the R_proxyserv service. Function code 3 of R_proxyserv requires the caller to be in supervisor state.