Sorry, I can't help you any further. Have you checked all the relevant info on the
Spacewalk website, there seems to be rather a lot; User Documentation, Developer Documentation, FAQs, ways to communicate with the Spacewalk developers which may be your route to a solution.
An answer from LinuxQuestions members will depend on someone within the forums who uses Spacewalk and is sufficiently expert in its set up and use actually finding and reading your post. Possibly pretty long odds.
Play Bonny!