A few days ago, I faced a strange behaviour when I tried to test SOAP and REST services deployed to a fresh SOA Suite 12c (12.2.1.1) installation. Using SOAP UI for testing the services always gave me an response in a HTML format, which says “ Error 403 Forbidden“, like it is displayed in the screenshot below:

Going through all log files of the corresponding Managed Server, where Servicebus was installed to, I didn’t find any hint that even the request was delivered to the servers. The requests simply had no footprint in the access.log or the server’s diagnostics.log – which seemed to be very strange to me. Assuming that the behaviour might have been something to do with the security policies applied to the services, I disabled all security policies as a next step – without any success.

After testing the services successfully in another environment, it was quite clear to me…