PPM workflow integration stuck at validation step, external system never receives completion signal

PPM workflow integration with external validation system halts at the validation step without progressing. The workflow triggers correctly, external validation completes successfully, but the callback to Agile never updates the workflow status. Changes remain stuck in “Pending Validation” status indefinitely.

Workflow event configuration shows the PX trigger is registered:

public class ValidationHandler extends EventHandler {
    public EventResponse handleEvent(IAgileSession session, INode node) {
        // Calls external validation service
        return new EventResponse(EventConstants.STATUS_SUCCESS);
    }
}

External system logs confirm validation completed and attempted callback to Agile endpoint. We’ve tested the callback endpoint manually and it responds correctly. Is there a specific workflow event configuration or PX/SDK trigger setup needed to receive and process external callbacks properly?

Don’t forget to test the callback endpoint thoroughly before going live. Use tools like Postman to simulate the external system’s callback with various payload formats. Also implement proper authentication on your callback endpoint - you don’t want unauthorized systems updating workflow statuses. We use API tokens that are validated in the callback handler before processing any status updates.

The issue is likely that your PX event handler returns immediately after calling the external service, but the workflow needs an asynchronous callback mechanism. You need to implement a separate REST endpoint or web service in Agile that the external system can call back to update the workflow status. The PX handler should only initiate the external validation, not wait for results.

I see the async pattern issue now. We need a separate callback receiver. How should this be implemented - as a custom web service, REST endpoint, or can we use SDK to update workflow status directly from the callback? Also, what’s the best way to correlate the external validation response back to the correct Agile change object?

Implement a custom REST endpoint using Agile REST API extensibility. The endpoint should accept the validation result and change ID, then use SDK to update the workflow status. For correlation, pass the Agile change number to the external system during the initial trigger, and have it return that ID in the callback payload. Store pending validations in a tracking table if you need to handle timeouts or retries.

Check your workflow status criteria configuration. The validation step needs to be configured to accept external status updates via API. In PPM Admin, verify that the validation status has the “Allow External Update” flag enabled and that the callback user has permission to modify workflow status. Without this, even valid callbacks will be rejected.