Request list of modules needed to use NSCUS

I have used NSCUS in one of our application programs which adds users to our system. I tried to copy NSCUS to library SYSTEM but my program then hangs. What other modules need to be copied to use this API? I do not want to add SYSSEC as a steplib to all our production libraries.

Thanks

Please ignore this - I have tried this again and all is fine. :oops:
Don’t know what I did the first time - sorry