Hi everyone,
I'm trying an example to create multiple records in Dynamics 365 by using a Batch List, I'm working with the given example in:
https://github.com/davidyack/Xrm.Tools.CRMWebAPI/blob/master/dotnet/Xrm.Tools.WebAPI.Test/BasicCRUDTests.cs
My code is something like this:

I have another method to perform the Creation of the records as well:

But when debugging the code I'm receiving an error that says "The method or operation is not implemented", here are the error details:

Have you ever seen this kind of error? Or can you please tell me if there's something wrong with my code? Hope you can help me!
Thanks in advance!
Best Regards,
Alberto.