2** Success codes
| 200 | To indicate success |
| 201 | New resource has been created |
| 202 | Request has been received but not completed |
| 204 | Request has been completed but not returning any content |
5** Server Error codes
| 500 | Internal server error |
| 501 | Not implemented, may be server does not recognize request method |
| 503 | Service unavailable |