Retail Proxy (C#) entity creation error / serialization issue.

[Dwizzle252]

Retail Proxy (C#) Issue during entity creation

Summary

Describe the issue
Attempting to create a customer through the retail proxy > RetailServerContext > CustomerManager.

When creating a customer, I get an error "(A null value was found for the property named 'AccountNumber', which has the expected type 'Edm.String[Nullable=False]'" - however I have left that property off when configuring the customer."

This property was not set when populating in the new customer object. I think the retail proxy/server context is serializing the whole customer object instead of just the properties that have been set or changed.

var manager = _managerFactory.GetManager<ICustomerManager>();

 var customer = new Customer()
 {
   //only setting the properties I want  created for the customer.
};

//this results in the error (seen in event viewer logs for the retail server)
customer = await manager.Create(customer);

If calling: customer.SerializeToJsonObject(); the serialization occurs correctly, however this serialization is ignored in the RetailServerContext and underlying data service context.

I assume this occurs with all the retail proxy create calls & not just customer.

Version and Error Info
Sample Version:
9.54.25212.2 - Microsoft.Dynamics.Commerce.Proxy.ScaleUnit
10.0.44 - Commerce Scale Unit (SEALED)

Microsoft.OData.ODataException: A null value was found for the property named 'AccountNumber', which has the expected type 'Edm.String[Nullable=False]'. The expected type 'Edm.String[Nullable=False]' does not allow null values.
   at Microsoft.OData.ReaderValidationUtils.ThrowNullValueForNonNullableTypeException(IEdmTypeReference expectedValueTypeReference, String propertyName)
   at Microsoft.OData.ReaderValidationUtils.ValidateNullValueAllowed(IEdmTypeReference expectedValueTypeReference, Boolean validateNullValue, String propertyName, Nullable`1 isDynamicProperty)
   at Microsoft.OData.ReaderValidationUtils.ValidateNullValue(IEdmTypeReference expectedTypeReference, Boolean enablePrimitiveTypeConversion, Boolean validateNullValue, String propertyName, Nullable`1 isDynamicProperty)
   at Microsoft.OData.ReaderValidator.ValidateNullValue(IEdmTypeReference expectedTypeReference, Boolean validateNullValue, String propertyName, Nullable`1 isDynamicProperty)
   at Microsoft.OData.Json.ODataJsonReaderCoreUtils.TryReadNullValue(IJsonReader jsonReader, ODataInputContext inputContext, IEdmTypeReference expectedTypeReference, Boolean validateNullValue, String propertyName, Nullable`1 isDynamicProperty)