Dynamics 365 for Operations (a.k.a. AX7) provides several endpoints for web service. In this blog post, I want to describe consuming a D365O custom web service in a C# application using the SOAP endpoint. For a detailed description about service endpoints, you can read the official documentation at https://docs.microsoft.com/en-us/dynamics365/operations/dev-itpro/data-entities/services-home-page . The main advantage of the SOAP protocol is its descriptive functionality through the WSDL language. SOAP endpoints provide detailed description about contracts and parameters to call each service method. Visual Studio has a great functionality that can read the service description and automatically generate proxy classes to access the service methods. Let’s do an example of consuming a D365O web service in Visual Studio. Run Visual Studio and go to File – New Project , go to Templates – Visual C# – Windows Classic Desktop on the left side of the window and select Console App