COMPON=SSI, COMPID=5752SC1B6, ISSUER=IEFJSaaa, MODULE=IEFJbbbb, ABEND=xxxxx, REASON=yyyyyyyy

Component
Subsystem Interface (5752-SC1B6)
Issuing module
IEFJSARR, IEFJSFRRB, IEFJSPCE, IEFJRASP, IEFJSRE1, or other modules may appear for errors in SSI services other than routing function requests.
Explanation
The dump title indicates an SSI routine is the failing CSECT, even when the error occurred in a subsystem function.
Associated problem data
The VRA data will contain the SSCVT, SSOB, and SSIB of the failing subsystem. For further diagnostic information, refer to z/OS MVS Using the Subsystem Interface , section titled "Troubleshooting Errors in Your Subsystem".