The PATCH method applies partial modifications to a resource.
| RESTful | 
| PATCH, mutating entities | 
| Return codes and errors 409 Conflict: PATCH and PUT failures with unique fields | 
| Return codes and errors POST and PATCH should never result in a 200 (generally 201, occasionally 202). | 
| Standard Methods | 
| Update The standard Update method should support partial resource update, and use HTTP verb PATCH |