[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) › DataError

Defined in: [packages/common/src/Type.ts:13267](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L13267)

An error containing one or more issues found while validating a candidate as
[Data](https://evolu.dev/docs/api-reference/common/Type/variables/Data).

## Extends

- [`TypeError`](https://evolu.dev/docs/api-reference/common/Type/interfaces/TypeError)\<`"Data"`\>

## Properties

<a id="reason"></a>

### reason

```ts
readonly reason: {
  issues: readonly [DataIssue, DataIssue];
  kind: "Issues";
};
```

Defined in: [packages/common/src/Type.ts:13268](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L13268)

| Name     | Type                                                                                                                                                              | Defined in                                                                                                                                             |
| -------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `issues` | readonly \[[`DataIssue`](https://evolu.dev/docs/api-reference/common/Type/type-aliases/DataIssue), [`DataIssue`](https://evolu.dev/docs/api-reference/common/Type/type-aliases/DataIssue)\] | [packages/common/src/Type.ts:13270](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L13270) |
| `kind`   | `"Issues"`                                                                                                                                                        | [packages/common/src/Type.ts:13269](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L13269) |

---

<a id="type"></a>

### type

```ts
readonly type: "Data";
```

Defined in: [packages/common/src/Type.ts:870](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L870)

#### Inherited from

[`TypeError`](https://evolu.dev/docs/api-reference/common/Type/interfaces/TypeError).[`type`](https://evolu.dev/docs/api-reference/common/Type/interfaces/TypeError#type)