Setting Required WCF Headers
Beginning with version 2009-09-19, the Table service requires that all REST calls include the following headers:
DataServiceVersion: Set the value of this header to
MaxDataServiceVersion: Set the value of this header to
These headers are defined by WCF Data Services.
Note that if you are accessing the Table service using the .NET Client Library for WCF Data Services, these headers are automatically set for you.