Need some troubleshooting help with a race condition in our Architect flow involving Genesys Cloud Edge (BYOC) and ServiceNow incident creation. The environment is deployed in the Europe/London region with Edge nodes handling digital channel traffic. When a conversation trigger fires, the flow attempts to push metadata via a Webhook to a ServiceNow Data Action endpoint. Under normal latency conditions (<200ms), the idempotency key check in ServiceNow prevents duplicates. However, during peak load, the Edge node introduces variable latency, causing the Webhook timeout to exceed the configured 5-second threshold. Genesys Cloud retries the request, but ServiceNow has already processed the initial request before the timeout occurred, resulting in duplicate incidents. The ServiceNow REST API returns a 200 OK for both requests because the idempotency header is not being forwarded correctly from the Edge node to the Data Action processor. The Architect flow logs show Webhook failed: Timeout followed by a successful retry, while ServiceNow logs show two distinct incident records with identical correlation IDs. The issue persists despite increasing the Webhook timeout to 10 seconds, suggesting the problem lies in how Edge handles HTTP headers during retry mechanisms or the synchronization of the idempotency key between the Genesys Cloud platform and the Edge runtime. The specific error in the Architect flow monitor is HTTP 408 Request Timeout on the initial call, but the downstream effect is data integrity loss in ServiceNow. We are using the latest stable version of the Genesys Cloud Edge SDK and have verified that the idempotency key is present in the initial payload. The question is whether the Edge runtime strips or modifies custom headers during the retry process, or if there is a configuration setting in the Webhook action to ensure strict idempotency enforcement across retries. Any insights into the header propagation behavior in Edge BYOC deployments would be appreciated, as this is impacting our service desk ticket volume significantly.
How I usually solve this is by adding a deliberate delay step right after the webhook call to allow the idempotency check to settle.
In Zendesk, we relied on API queueing to handle this, but Genesys Cloud processes these sequentially unless told otherwise.
Adding a 500ms wait block in Architect prevents the race condition entirely. It feels clunky, but it works reliably for low-volume triggers.
The root cause here is the asynchronous nature of HTTP calls in Architect combined with the lack of native idempotency enforcement at the flow level.
The suggestion above adds latency, which masks the problem but does not solve the root cause. In a code-first deployment strategy, relying on arbitrary delays is fragile and fails under load spikes. Instead, implement a retry mechanism with exponential backoff and ensure the ServiceNow endpoint returns a specific status code only when the record is fully persisted. The flow should wait for a 201 Created or 200 OK before proceeding. If the webhook returns 409 (Conflict), the flow should treat it as a success and skip creation. This logic must be defined in the flow configuration, not via artificial waits.
steps:
- id: create_incident
type: Webhook
config:
url: "https://service-now/api/incidents"
method: POST
retry:
max_attempts: 3
backoff: exponential
success_codes: [200, 201, 409]
Hardcode the 409 as a success state to handle duplicates gracefully.