Not sure what is debug info do you want in this case?
RFA can just provide only RFA Logger component to turn on Logger message from RFA internal layer. It will generate the information in file rfa.log. You can find more details from RFA Developer Guide C++ section Chapter 11 Logger Package Usage.
If you are using RFA OMM interface(RSSL connection type), you can also turn on the RSSL tracing log which contains incoming and outgoing message between RFA and Provider/Infra component. You can also use the RSSL tracing log for troubleshooting purpose. To turn on the tracing log file please see this post.