Cause

Redis is unavailable — Idempotency-Key cannot be processed.

Partner action

Retry without Idempotency-Key header, or retry later with the same key.

Gando action (internal)

Check REDIS_URL connectivity and Redis health in infra.

Example response

{
  "error": {
    "code": "redis_unavailable",
    "message": "Redis is unavailable; Idempotency-Key cannot be processed",
    "requestId": "req_abc123"
  }
}