I am working on an environment (external) where IIS is the web server and WebSphere is the application server. I have noticed that the error messages (Ex. 403, 404) show both IIS error messages as well as what the application returns through WebSphere.
I am not able to replicate this in a local environment. I can either get it to show one or the other using existingResponse.
I want to know how the external environment set this up and how I would make it only show the IIS error message.