# Error code E0559

An unknown field was specified into an enum’s structure variant.

Erroneous code example:

ⓘ

    enum Field {
        Fool { x: u32 },
    }

    let s = Field::Fool { joke: 0 };
    // error: struct variant `Field::Fool` has no field named `joke`

Run

Verify you didn’t misspell the field’s name or that the field exists. Example:

    enum Field {
        Fool { joke: u32 },
    }

    let s = Field::Fool { joke: 0 }; // ok!

Run

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