| IA403 | 403 | Preceded by a 403 status code, this indicates the expiry or invalidation of an API Key. | 
| IA401 | 401 | Preceded by a 401 status code, this indicated the missing, expiry or invalidation of JWT token. | 
| IA400 | 400 | Preceded by a 400 status code, Represents missing required fields, bad values for parameters etc. | 
| IA404 | 404 | Preceded by a 404 status code, Requested resource could not be found. | 
| MA{XXX} | --- | Represent the error status code received from mStock's API. | 
| IA500 | 500 | Represents an Internal server error occured while processing the API request. This should only happen rarely. |