No problem, hope I can help. Like I say, I think in this case it sounds like you may need a bit more support understanding any particulars of the ESB like a full sample request that is known to work. Then there should be no reason why SoapUI can't repeat the sample request.
Thanks, thats nice of you to mention the book, I am trying not to mention it too much as I figured it might be seen as self promotional/annoying! I think Chapter 4 has been provided as a sample chapter, at least partically and contains a REST example using HATEOAS links (and namespaces) e.g.
<quote xmlns:atom="http://www.w3.org/2005/Atom">
<id>777</id>
<amount>100</amount>
<atom:link rel="self" href="http://localhost:8080/quote/777"/>
<atom:link rel="customer" href="http://localhost:8080/ customer/12345"/>
</quote>
So, it might help. Although I would say that the cook book hopefully/probably builds on, rather than replaces, the excellent SoapUI wiki and would recomend that as the first place to start - plus this great forum of course! :-)
If you need any more help on this stuff please let me know,
Cheers,
Rupert