1 - Call the login logic. 2 - Retrieve the Course credit entity metadata by using RetrieveEntityRequest with EntityFilters = Attributes and LogicalName 3 - Define the AttributeMetaData for each new field. 4 - Call the RetrieveAttributeRequest with LogicalName for each new field. Reference: https://docs.microsoft.com/en-us/dotnet/api/microsoft.xrm.sdk.messages.retrieveentityrequest.entityfilters?view=dynamics-general-ce-9