traceId.
All error codes and the retry model: Errors.downstream_unavailable
HTTP 502 — an FMG platform service behind Connect is unavailable.
FMG Connect could not complete the request because a platform service it
depends on was unavailable, overloaded, or returned a response Connect could
not interpret.
Retryable. This is transient. Retry with exponential backoff and jitter.
If it persists for more than a few minutes, contact FMG support with the