Why Simple.Odata.Client requires autogenerated "Id" to be passed with proper value while inserting record in D365Crm API

[Najjaf]

Hi, we have integrated Simple.Odata.Client in one of our application to interact with D365 Crm API. We can create different entity records but, we are confused why it requires the uniqueIdentifier "Id" to be passed with proper value while creating a record in D365Crm? provided that, CRM itself maintains uniqueIdentifier. For example,

We are creating a Contact record as below,

var result = await client.For().Set(new Contact { Id = Guid.NewGuid(), Name = "Test Contact"}).InsertEntryAsync();
return result.Id;

Here we are forced to pass the "Id" with new Guid while D365Crm manages itself. If we don't pass this value, we are getting below error,

"d365crm Expected non-empty Guid"

Would anyone be able to help us?

Thanks,
Najjaf