| 401 | Authentication failed | Your authentication credentials are incorrect or your W&B project entity and/or name are incorrect. | Ensure you’re using the correct API key and that your W&B project name and entity are correct. |
| 402 | You exceeded your current quota, please check your plan and billing details | Out of credits or reached monthly spending cap. | Get more credits or increase your limits. For more information, see Usage information and limits. |
| 403 | Country, region, or territory not supported | Accessing the API from an unsupported location. | Please see Geographic restrictions |
| 403 | The inference gateway is not enabled for your organization | Your organization doesn’t have the inference gateway enabled, which is required to use W&B Inference. | Contact your W&B administrator to enable the inference gateway for your organization, or reach out to W&B support for assistance. |
| 429 | Concurrency limit reached for requests | Too many concurrent requests. | Reduce the number of concurrent requests or increase your limits. For more information, see Usage information and limits. |
| 500 | The server had an error while processing your request | Internal server error. | Retry after a brief wait and contact support if it persists. |
| 503 | The engine is currently overloaded, please try again later | Server is experiencing high traffic. | Retry your request after a short delay. |