Scenario: You wrote a procedure in a codeunit that takes one or more parameters and exposed it as a web service. At the time of writing this blog post, all codeunits published as a web service in Dynamics 365 Business Central have a SOAP end-point available only. You want to test a POST request using Postman (or any API testing tool of your choice) invoking your procedure.
1: Write and Publish a Test Procedure as a Codeunit


2: Prepare a GET Request URL and Send a Request
3: Find SOAPAction from the RAW Response

4: Add SOAPAction in HTTP Header

5: Send a POST Request


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