Automating test when web service converts message

Are you saying that you are calling a web service request and that calls internall another service. But, finally a response is received the request you have sent, is it correct? Are you facing any issue to automate this?

The webservice converts a message and passes this message to another webservice which does something and passes it also. At some point in time the first webservice receives a small response.
I am looking at a way to verify the conversion automatically with soapui. This all happens in an Oracle Soa environment.

Sorry, is there some thing that you are allowed to share or we can see some visuals(white board work image/soapui screen shot etc.,) to get it more clear?

Hi Rao, I do not have anything visual but will try to explain it.

XML Message is sent to webservice A following a specific datamodel X and corresponding XSDs. This message is converted there by XQUERY to another XML which adheres to another data model Y.
That message is passed to webservice B where something is registered into a database.
Webservice B passed a response to webservice A. At webservice A this response is converted to the original datamodel X. This response onlys says that the whole process is succesfully processed.

I would like to check the conversion via soapui from datamodel X to datamodel Y at webservice A.

I already have received a suggestion to implement a seperate webservice which performs the conversion and sends the converted XML back as a response but maybe there is another idea.

The conversion is logged in the oracle SOA bus where I can extract it manually.

Hope this makes it clear.