| Error Code | Message | Resolution | 
| AUTH 
 | Unauthorized access, please contact Westcon API Support | Contact Westcon Support with details of the request. | 
| ERR 
 | An internal error occurred. If this problem persists, contact Westcon API Support. | Retry your request and if the problem continues, contact Westcon API Support with details of the request for further investigation. | 
| GEN 
 | Generic carrier system error has occurred. | Retry your request and if the problem continues, contact Westcon API Support with details of the request for further investigation. | 
| MAX 
 | Too many requests | Refer to carrier limitation table and wait indicated interval before retrying your request. | 
| OFF 
 | Carrier System(s) offline. | Carrier system is temporarily offline. Retry request after some wait period. | 
| OK 
 | Success. | -- | 
| PAR 
 | Invalid parameter(s). | Check request parameter(s) and resubmit message. | 
| SNF 
 | Shipment Not Found. | Check tracking number is correct. |