---
updatedAt: 2026-03-30T09:17:07.000Z
agentTools:
  projectIndex: https://developers.bazaarvoice.com/v1.0-NotificationsAPI/llms.txt
---

# Troubleshooting

Use the following table to help you troubleshoot the errors you receive from the API.

| HTTP Error Code        | Troubleshooting                                                                 |
| ---------------------- | ------------------------------------------------------------------------------- |
| 400 Bad Request        | - Missing or incorrect required parameter                                       |
|                        | - Missing header `Content-Type: application/json`                               |
|                        | - Use of an `Accept` header that precludes a JSON response                      |
|                        | - Incorrectly constructed email authentication token                            |
| 401 Unauthorized       | - Missing, invalid, or incorrect API key for environment or client              |
|                        | - Ensure client name in path is correct                                         |
| 403 Forbidden          | - API key missing from request or not enabled                                   |
| 404 Not Found          | - Ensure path includes exactly `/subscriptions/`, all lowercase                 |
|                        | - Ensure email type is correct, all caps                                        |
| 405 Method Not Allowed | - Incorrect HTTP method. Use GET to request email addresses, and POST to submit |
| 596 Service Not Found  | - Ensure path includes exactly `/notifications/`, all lowercase                 |

Still having trouble? <a href="https://developers.bazaarvoice.com/page/support" target="_blank" rel="noopener"> Contact support </a> for assistance.