[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Storage](https://evolu.dev/docs/api-reference/common/local-first/Storage) › ValidDbChangeValues

```ts
const ValidDbChangeValues: brand(
  "ValidDbChangeValues",
  DbChangeValues,
  (value) => {
    const invalidColumns = systemColumnsWithId.filter((key) => key in value);
    if (invalidColumns.length > 0)
      return err<ValidDbChangeValuesError>({
        type: "ValidDbChangeValues",
        value,
        invalidColumns,
      });

    return ok(value);
  },
);
```

Defined in: [packages/common/src/local-first/Storage.ts:276](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/local-first/Storage.ts#L276)