The provided URI scheme 'https' is invalid; expected 'http' when calling web service

Question

I am trying to call a SharePoint web service from a CRM workflow using custom C# code. However when I run my code, I get the following error:

The provided URI

Answer 1

As per the documentation for BasicHttpSecurityMode, TransportCredentialOnly may only be used with HTTP. For HTTPS you must use either Transport or TransportWithMessageCredential.