cosmos-sdk/docs/sdk/sdk-by-examples/simple-governance/module-errors.md

Errors

File: x/simple_governance/errors.go

The error.go file allows us to define custom error messages for our module. Declaring errors should be relatively similar in all modules. You can look in the error.go file directly for a concrete example. The code is self-explanatory.

Note that the errors of our module inherit from the sdk.Error interface and therefore possess the method Result(). This method is useful when there is an error in the handler and an error has to be returned in place of an actual result.