CLEAN_REQREQ_UP

We are running SRM 4.0 in extended classic scenario and have R/3 4.70 as our backend.

I have a custom program that is creating a background job that runs the CLEAN_REQREQ_UP program. My question is, is there anyway for me to know when this job has completed? Ideally I'd like the program to submit the background job for CLEAN_REQREQ_UP and then wait for the job to complete before processing further. Anyone have an idea on how to solve this problem?

Best regards,

Shawn O'Connor