Architect Flow Timeout: 504 Gateway Timeout on Third-Party REST Integration

Architect & Flows
1

Can anyone clarify the expected behavior when an Architect flow encounters a 504 Gateway Timeout during a REST API integration step?

We are experiencing intermittent failures in our primary inbound flow within the Europe/Paris region. The flow utilizes a REST API request to an external CRM system to validate customer eligibility before routing. The external vendor confirms their endpoint is stable, yet our Genesys Cloud logs show a consistent 504 error after exactly 30 seconds of inactivity from the target service.

Environment Details:

  • Region: Europe/Paris
  • Component: Architect Flow Builder
  • Action: REST API Request
  • Timeout Setting: Default (30 seconds)
  • HTTP Method: POST

The specific issue arises when the CRM system performs a complex database lookup that occasionally exceeds the 30-second window. When this occurs, the flow fails the “Success” branch and proceeds to the “Error” branch. However, the error handling is not capturing a specific error code; it is simply dropping into the generic error handler. This results in a poor customer experience, as callers are routed to an IVR menu instead of being queued or offered a callback.

We have attempted to increase the timeout duration in the REST API action settings, but the maximum allowed is 60 seconds. Even with this adjustment, the 504 errors persist, suggesting the issue may be related to the Genesys Cloud platform’s internal timeout enforcement rather than the action configuration.

Is there a recommended pattern for handling long-running external API calls in Architect flows? We need a reliable method to detect when the external service is still processing versus when it has genuinely failed. Additionally, are there any known issues with the Europe/Paris region regarding REST API timeouts? Any insights into best practices for managing these timeouts in high-volume flows would be greatly appreciated.

2

The simplest way to resolve this is to explicitly set the timeout in the request configuration, which differs from how Zendesk handled external calls.

{
 "timeout": 60000,
 "method": "GET",
 "url": "https://api.example.com/validate"
}

This prevents the default 30-second cutoff from killing your CRM validation step.