If a request specifies that it is to be handled by a remote node, the local node sends the request to the target node specified by the AT value. The request is handled by the RRSF at that remote node.

For example, USER1 on NODED could direct a RACF® TSO command to run in either the RACF subsystem address space on NODED under his own user ID authority, or direct the request to NODEC to run under the authority of USER2 (because USER1 on NODED has an approved user ID association with USER2 on NODEC.)

LISTUSER USER2 AT(NODEC.USER2)

This command causes RRSF on NODED to send the request to NODEC. RRSF running in the RACF subsystem address space on NODEC creates a subtask for USER2 in the RACF subsystem address space and runs the LISTUSER command. The output is captured and sent back to NODED, where RRSF places it into USER1's RRSFLIST data set, as specified in Capturing command output.