You’re making us guess as to what might be incorrect. Please share the values of the inputs. Obviously don’t share sensitive data but we need to know the values set for method, data/string, headers/Content-Type.
As @Nagendra_Prasad notes, specifying inputs for auth and setting an Authorization header is redundant but may not be an issue depending upon the value assigned to it.
In any case, to get useful suggestions you’ll need to share the details.
#Integration-Server-and-ESB#webMethods