No HTTP resource was found that matches the request URI in Dynamics 365 Finance and Operations API Integrations

I was getting the below error while calling some D365 F&O integration endpoint from third party system..

No HTTP resource was found that matches the request URI

Solution: 
The problem was simple but can be easily missed. There’s a difference between the Method parameter and the Route Decorator parameter. Both parameters should have the same name and you should be able to browse the method using the browser.