Outbound Campaign ACD Queue Assignment Failing with 400 Bad Request in Architect Flow

General Discussion
1
  • The outbound campaign is failing to assign calls to the intended ACD queue, resulting in a 400 Bad Request error during the Connect to Queue block execution in the Architect flow.
  • The specific error payload returned is {"errors":[{"code":"INVALID_QUEUE_ID","message":"The specified queue ID does not exist or is not accessible."}]}.
  • Environment Details:
  • Genesys Cloud Platform Version: 2023.11.2
  • Region: eu-west-1 (Sydney deployment constraints noted in previous tickets)
  • Flow Version: v4.2.1 (Published)
  • Outbound Campaign ID: oc_8f7a6b5c-4d3e-2f1a-9b8c-7d6e5f4a3b2c
  • The Architect flow logic is configured to set the queue ID dynamically using a Data Action that retrieves the queue ID based on the customer’s region tag. However, the logs indicate that the variable {{queueId}} is being passed as null or an empty string to the Connect to Queue block, despite the Data Action returning a valid UUID.
  • The performance dashboard shows a spike in Failed to Route metrics for this specific campaign, impacting the agent adherence scores and overall service level agreements (SLAs) for the Paris timezone agents.
  • The queue configuration in Genesys Cloud Admin confirms that the target queue exists and has the necessary permissions for the outbound campaign user role.
  • The issue persists across multiple test calls, suggesting a systemic configuration error rather than an isolated incident.
  • The goal is to identify why the Data Action output is not being correctly mapped to the Connect to Queue block input, and how to resolve the INVALID_QUEUE_ID error to restore normal outbound dialing operations.
  • Any insights into the Data Action configuration or the Connect to Queue block parameter mapping would be appreciated. The focus is on ensuring that the queue ID is correctly serialized and passed through the flow logic to avoid routing failures.
2

The documentation actually says…
The /api/v2/outbound/campaigns endpoint does not support direct queue ID injection in the payload without prior validation. This is a common limitation when trying to bypass standard routing rules. Check these items:

  • Queue ID format
  • Campaign permissions
  • Architect flow variables
3

Take a look at at the specific queue ID resolution logic in your Terraform state. The suggestion above highlights permission issues, but the 400 error with INVALID_QUEUE_ID often stems from a mismatch between the campaign configuration and the actual Architect flow variable resolution during deployment.

If you are managing this via CX as Code, ensure the queue ID is not hardcoded in the campaign JSON but rather resolved dynamically. The Genesys Cloud provider sometimes fails to validate dependent resources if the queue is created in a separate module without a proper dependency chain.

Here is a minimal HCL snippet to enforce that dependency:

resource "genesyscloud_outbound_campaign" "my_campaign" {
 name = "Outbound Test"
 queue_id = genesyscloud_routing_queue.my_queue.id
 # Ensure the flow ID is also referenced correctly
 flow_id = genesyscloud_flow.my_flow.id
}

resource "genesyscloud_routing_queue" "my_queue" {
 name = "Outbound Queue"
}

Also, check the Queue API documentation for the queueId field constraints. It requires the queue to be fully active before the campaign can link to it. If you are using GitHub Actions for promotion, add a depends_on meta-argument to ensure the queue is provisioned before the campaign updates. This prevents race conditions where the campaign tries to link to a queue that is still being created or updated in the target environment.

Verify that the queue ID in your local state matches the production environment ID if you are using data sources for cross-environment lookups. A common mistake is referencing a data source that pulls from the wrong org or environment context.

4

The official documentation states that outbound campaign routing in Genesys Cloud is fundamentally different from how Zendesk handled outbound tasks. In Zendesk, we could simply tag a ticket with an outbound label and assign it to a specific agent group, and the system would handle the rest. Here, the Connect to Queue block in Architect requires a strict, validated Queue ID that matches the campaign’s configured distribution method. The 400 error usually means the variable resolving the queue ID is either empty or pointing to a queue that isn’t enabled for outbound dialing.

To fix this, ensure the Architect flow variable linked to the Connect to Queue block is explicitly set to the static Queue ID in the campaign settings, not a dynamic lookup that might fail during high concurrency. If you are migrating from Zendesk’s flexible assignment rules, remember that Genesys Cloud outbound campaigns need the queue explicitly selected in the campaign configuration under the “Routing” section.

Check the campaign JSON to confirm the queueId field matches the ID used in the Architect flow. If you are using CX as Code, validate that the queue resource is deployed before the campaign resource. This dependency order is critical. In Zendesk, resources were more loosely coupled, but Genesys Cloud enforces strict dependency chains.

{
 "queueId": "your-actual-queue-id-here",
 "distributionMethod": "LONGEST_AVAILABLE_AGENT"
}

Also, verify that the queue has “Allow outbound calls” enabled in the Admin console. This setting is often overlooked during migration. Zendesk didn’t have a separate toggle for outbound queue eligibility, so it’s a common gap. Once the queue is enabled and the ID matches, the 400 error should resolve. This approach aligns with Genesys Cloud’s emphasis on explicit routing controls, which provides better auditability than Zendesk’s tag-based system.

5

The root of the issue is that the queue ID passed to the outbound campaign often lacks the necessary permissions for the specific agent group assigned to that shift. When publishing schedules, ensure the agents in the target queue have the ‘outbound:campaign:view’ and ‘outbound:campaign:edit’ permissions explicitly granted. A common oversight is assuming general queue membership grants outbound access. Check the campaign settings in Admin to verify the ‘Queue’ field matches the exact ID from the Architect flow, not a variable placeholder. If using dynamic queue assignment, validate the variable resolution against the actual queue ID in the platform. Misaligned permissions or incorrect ID formats cause the 400 error. Review the agent roster and ensure the scheduled agents are active and properly assigned to the queue before running the campaign again. This usually resolves the INVALID_QUEUE_ID issue quickly.