| BA-400-1 | 400 – Bad Request | GET /services | Missing mandatory header {M}: X-Transaction-Id | Required header {M} not specified. |
| BA-404-1 | 404 – Not Found | GET /services | No matching broadband availability data found. | No matching broadband availability data found. |
| BA-404-2 | 404 – Not Found | GET /services | Unable to find the resource. | Unable to find the resource you requested. |
| BA-405-1 | 405 – Method Not Allowed | GET /services | A request method is not supported for the requested resource; e.g. a POST request is used to call GET address details. | Unsupported http method encountered. |
| BA-406-1 | 406 – Not Acceptable | GET /services | Potentially caused by an 'Accept' request header other than 'application/json'. | Request is not acceptable. |
| BA-500-1 | 500 – Internal Server Error | GET /services | There was an unexpected exception and/or condition encountered and needs further investigation. | Unable to process your request due to an unexpected error. |
| BA-500-2 | 500 – Internal Server Error | GET /services | Unable to process your request due to an unexpected upstream API error. | Unable to process your request due to an unexpected upstream API error. |
| BA-503-1 | 503 – Service Unavailable | GET /services | A service that the API is dependent on is not responding in a timely manner. | Upstream service timed out. |
| BA-503-2 | 503 – Service Unavailable | GET /services | A service that the API is dependent ois returning an unexpected error. | Unable to process your request due to an unexpected upstream API error. |