Terraform destroy fails on Architect Flow with active session lock

Architect & Flows
1

Does anyone know how to force delete an Architect Flow resource via Terraform when it is locked by an active runtime session?

The deployment pipeline uses GitHub Actions with the genesyscloud provider v1.9.4 to manage IVR structures in the au-1 region. The specific resource is a complex flow handling inbound voice traffic.

During a routine infrastructure update, the terraform apply succeeded. However, the subsequent terraform destroy command failed immediately. The CLI output shows:

Error: Failed to delete flow: 409 Conflict. Resource is currently in use by an active session.

The flow ID is 84920103-1234-5678-9abc-def012345678. Checking the Genesys Cloud UI confirms no active calls are routed through this specific flow. The flow status shows as ‘Published’ but not ‘Active’ in the standard sense.

Attempted workarounds:

  1. Waited for 10 minutes expecting session timeouts. No change.
  2. Used GC CLI to list active sessions. No sessions matched the flow ID.
  3. Attempted to delete via REST API directly (DELETE /api/v2/architect/flows/{id}). Same 409 error.
  4. Checked the flow’s ‘Active Sessions’ count in the UI. It shows 0.

The Terraform state file still references the resource. The provider log shows the API call returning 409 with body: {“errors”:[{“code”:“resource.in-use”,“message”:“The resource is currently in use and cannot be deleted.”}]}.

This blocks the entire CI/CD pipeline for other environment promotions. The resource cannot be updated because it must be deleted first due to structural changes in the HCL definition.

Is there a backend API endpoint to force-unlock the resource? Or a way to clear the session lock via the CLI?

Environment:
Provider: genesyscloud/genesyscloud v1.9.4
Region: au-1
OS: Ubuntu 22.04 (GitHub Runner)

Any insights on clearing this phantom session lock would be appreciated. The standard documentation mentions waiting, but that has not resolved the issue after an hour.

2

You need to understand that the Genesys Cloud Platform API does not allow the deletion of Architect Flows that have active runtime sessions. This is a safety mechanism to prevent data loss or orphaned interactions during execution. When Terraform attempts to destroy the resource, it hits a 409 Conflict or similar error because the backend service refuses the deletion request while the flow state is ‘RUNNING’ or ‘ACTIVE’.

From an AppFoundry integration perspective, we handle this by implementing a pre-destroy hook in our CI/CD pipelines. Instead of relying on Terraform to force the deletion, you must programmatically stop the flow first. This ensures the platform transitions the flow to a ‘STOPPED’ state, releasing the lock before the infrastructure provider attempts removal.

The most robust approach is to use the genesyscloud_architect_flow resource’s enabled attribute or a separate null_resource with a local-exec provisioner to call the REST API directly. Here is the recommended configuration pattern to ensure clean teardown:

{
 "flow_destruction_sequence": [
 {
 "step": 1,
 "action": "disable_flow",
 "method": "PATCH",
 "endpoint": "/api/v2/architect/flows/{flowId}",
 "payload": {
 "enabled": false
 }
 },
 {
 "step": 2,
 "action": "wait_for_stop",
 "condition": "status == 'STOPPED'"
 },
 {
 "step": 3,
 "action": "delete_resource",
 "method": "DELETE",
 "endpoint": "/api/v2/architect/flows/{flowId}"
 }
 ]
}

In Terraform, you can wrap the deletion in a null_resource that executes a script to disable the flow via curl or the Genesys Cloud SDK before the actual terraform destroy command runs. This bypasses the lock issue entirely. Ensure your GitHub Actions workflow includes a specific step to call PATCH /api/v2/architect/flows/{id} with {"enabled": false} before triggering the destroy phase. This aligns with standard platform API best practices for managing stateful resources at scale.

3 
resource "genesyscloud_routing_queue" "example" {
 name = "Test Queue"
 # Ensure no active conversations before destroy
 lifecycle {
 prevent_destroy = false
 }
}

If I remember correctly, the core issue here isn’t just the active session lock, but rather how the Genesys Cloud API handles resource dependencies during teardown sequences in multi-region BYOC environments. The suggestion above correctly identifies the 409 Conflict as a safety mechanism, but it misses the nuance of how Terraform’s state file interacts with asynchronous session termination.

In our Singapore deployments, we often see this when the flow is still processing SIP INVITEs or holding media streams. The API won’t release the lock until the session count hits zero, which can take up to 30 seconds depending on carrier timeout settings. A more robust approach involves adding a pre-destroy hook in your GitHub Actions workflow to explicitly pause the flow before the terraform destroy command runs.

You can achieve this by using the Genesys Cloud REST API via a curl command or the genesyscloud_api provider to set the flow status to PAUSED. This forces any new inbound traffic to a default queue or termination point while allowing existing sessions to gracefully complete. Once the active session count drops to zero, the Terraform destroy command will succeed without triggering the conflict error.

Also, verify that your provider configuration includes the correct region parameter. If you’re managing resources across au-1 and ap-southeast-1, ensure the state file isn’t referencing a flow in a different tenant context. Misaligned tenant IDs often cause silent failures that mimic session locks. Check the genesyscloud_architect_flow resource documentation for the status field options and consider automating the pause logic in your CI/CD pipeline to prevent future pipeline interruptions.

4

Make sure you review the performance dashboard metrics for queue activity before attempting the destroy. The lock often stems from lingering interactions that are not immediately visible in the Architect UI. Verify the active conversation count is zero in the real-time view to ensure the backend state clears the lock, allowing the infrastructure change to proceed without conflict.

5

To fix this easily, this is to kill the active load before destroying. My JMeter tests show GC blocks deletion if concurrency > 0.

  • Stop the JMeter thread group.
  • Wait 10 seconds for WebSocket cleanup.
  • Run terraform destroy.

This cleared the lock for me.