[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) › ObjectExcessPropertyError

Defined in: [packages/common/src/Type.ts:11369](https://github.com/evoluhq/evolu/blob/f0109fb501a593010e858e39248dde1200eeb2d7/packages/common/src/Type.ts#L11369)

An error returned for an input property outside an Object Type's allowed key
domain.

This includes a property not declared by an [object](https://evolu.dev/docs/api-reference/common/Type/functions/object) schema and a symbol
property on the predefined [Object](https://evolu.dev/docs/api-reference/common/Type/variables/Object). The property key locates this error
in the containing Object error map. `ObjectExcessProperty` is reserved for
this structural failure. Property [Types](https://evolu.dev/docs/api-reference/common/Type/interfaces/Type) must use another error
tag.

## Extends

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

## Properties

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

### type

```ts
readonly type: "ObjectExcessProperty";
```

Defined in: [packages/common/src/Type.ts:870](https://github.com/evoluhq/evolu/blob/f0109fb501a593010e858e39248dde1200eeb2d7/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)