[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Type](https://evolu.dev/docs/api-reference/common/Type) › SetError

```ts
type SetError<Error> = SetNotSetError | SetItemsErrorValue<Error, true>;
```

Defined in: [packages/common/src/Type.ts:8009](https://github.com/evoluhq/evolu/blob/f0109fb501a593010e858e39248dde1200eeb2d7/packages/common/src/Type.ts#L8009)

Error returned by [set](https://evolu.dev/docs/api-reference/common/Type/functions/set) for a non-Set value or invalid Set items.