> For the complete documentation index, see [llms.txt](https://docs.aera.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aera.finance/the-protocol/core/icallbackhandler.md).

# ICallbackHandler

Errors used in the CallbackHandler mixin

## Errors

### Aera\_\_UnauthorizedCallback

Thrown when we receive a callback (or a regular call) that wasn't authorized

```solidity
error Aera__UnauthorizedCallback();
```