Response and error codes

Basically responses status and error codes are divided into five ranges.

1xx	Informational	Defines request received and continuing further process to serve request

2xx	Success	The request requested by client has been received, understood, accepted and processed successfully

3xx	Redirection	Indicate client to must take further action to complete request

4xx	Client error	Defines situations when client seems to have erred

5xx	Server error	Defined situations when server failed to serve valid request

In above list the range 4xx for client errors defines functional response error as below.

400	Bad request	This is the default response of error. Main cause of this error would be incorrect data send from the client in PUT request

401	Unauthorized	Request with incorrect credentials

402	PaymentRequired	License expired or Administration is blocked

403	Forbidden	Invalid user type

404	NotFound	Requested resource doesn’t exists

405	MethodNotAllowed	Requested action is not supported

406	NotAcceptable	Request send with wrong header details

409	Conflict	Request can not be processed because of conflict in request data

410	Gone	Application resource or entity marked for deletion successfully

429	ToManyRequests	Same request executed many times for a given time period