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2xx Success

226 IM Used

The response is a delta (instance manipulation) of the current resource.

What 226 means

Part of HTTP delta encoding, which is almost never deployed.

Common causes

  • The client asked for delta encoding with A-IM.

How to fix it

If you're calling an API

  • Apply the delta to your cached copy.

If you run the server

  • Rarely implemented.

Should you retry?

Not applicable.

Example response

HTTP
HTTP/1.1 226 IM Used
Content-Type: application/json

{"id": 42, "name": "Example"}

Defined in: RFC 3229. 226 is a success.

HTTP 226 FAQ

What does HTTP 226 mean?

226 IM Used: The response is a delta (instance manipulation) of the current resource. Part of HTTP delta encoding, which is almost never deployed.

Is 226 a client or server error?

Neither: 226 is a success response (2xx). The request was received, understood and accepted.

How do I fix a 226 error?

Apply the delta to your cached copy.

Should I retry after a 226?

Not applicable.

Other 2xx status codes

All HTTP status codes