exception: The AXIS engine could not find a target service to invoke! targetService is SecurityDepositServiceImpl

I have recieved this error in the past. You will get this error if it cannot find the service name in the URL. Keep in mind the URL is also case-sensative. You should be able to hit the URL in the browser and recieve a message like so:

YourWebServiceName
Hi there, this is an AXIS service!
Perhaps there will be a form for invoking the service here...

I also fixed this issue before when there was a trailing slash "YourService/" in the URL! Watch out for that one too! Took me FOREVER to find it.