Service Bus SOAP Proxy Service invoked from SoapUI fails with error 403--Forbidden

Hello all,

I'm facing the issue when I publish a new interface on OSB 12.2.1.1.0. When I invoke it from SoapUi it fails and I receive the error below:

The server understood the request, but is refusing to fulfill it. Authorization will not help and the request SHOULD NOT be repeated. If the request method was not HEAD and the server wishes to make public why the request has not been fulfilled, it SHOULD describe the reason for the refusal in the entity. This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable.