Troubleshooting
Under the hood, all Facebook APIs share the same infrastructure. Searching the Facebook Developers website may reveal more relevant information for your specific situation. You can also visit the Developer Support page, check open bugs, and drop by the Facebook Developer Community Forum.
Debug
The Conversions API returns minimal data to conserve network bandwidth. If the event payload is valid, a 2xx HTTP response code is returned. If invalid, a 4xx HTTP response code is returned, with minimal error details in the response body.
API Errors
Network errors or malformed requests may cause events to be dropped. We recommend retrying the request in cases where the response indicates a non-client error, such as a timeout. To account for various network delays, we recommend setting a timeout of 1500 milliseconds on the request. For the majority of requests, the response time will be under 600 milliseconds.