# Order-related errors

The Investment API returns synchronous order creation errors in the following cases:

| Error code | Description |
|  --- | --- |
| `400 Bad request` | The request is malformed. |
| `422 Unprocessable entity` | The specified values are valid but cannot be processed. This case occurs when the account ID does not yet exist in the system. |


Other errors that may occur during order processing are asynchronous and are represented by a change of state to `CANCELLED`. These have a descriptive error message.

Detailed enumeration of error messages will follow soon in the next iteration of the guide.