# Constants (/themes/sdk/reference/data/constants)

```ts
import { … } from '@poltura/theme-sdk/data';
```

## `StoreReadError` [#storereaderror]

A failed store read; `instanceof StoreReadError` holds for it wherever the theme renders.

```ts
class StoreReadError extends Error {
    constructor(code: StoreReadErrorCode, message?: string);
    readonly code: StoreReadErrorCode;
}
```