2xx Success
226 IM Used
The server applied one or more instance manipulations (such as a delta encoding) to the current representation.
What causes it
- Delta encoding with `A-IM: feed`, used by a small number of RSS caches.
How to fix it
- Very rare in practice; no action needed.
At a glance
- Class
- 2xx Success
- Reference
- RFC 3229 §10.4.1
- Standardised
- Yes
- Retry the request?
- No — fix the request