| ERROR | unregister failed, registration not found |
| CAUSE | The registration that was asked to be unregistered could not be found. |
| ACTION | Please check the callback function name and the subscription name in the unregister call. |
| ERROR | unregister failed, registration not found |
| CAUSE | The registration that was asked to be unregistered could not be found. |
| ACTION | Please check the callback function name and the subscription name in the unregister call. |