Generating APIM proxy of type soap with CPI as the backend, using soap sender.

Hello, Currently Im working with a scenario where, the sender pushes the data through apim, reaches CPI in the form of a soap message using soap 1.2 version. I’ve been trying to connect the soap adapter iflow with the APIM proxy of type soap but somehow i keep getting error ‘404 - not found’, the error keeps on reflecting with the correct endpoint of the iflow, which is deployed as well. the scenario works perfectly when a http sender is connected to the proxy of type rest but shows issues with soap.