Hitting a payload mismatch on the webhook side. Architect flow is v4.2.1, Node 18 handler in us-east-1. The IVR flow hits a set variable block right before the transfer to queue block. Triggering a webhook on conversation:updated that pipes straight into EventBridge, then Lambda. Lambda logs show the custom_attributes array is completely empty.
Checked the architect execution trace via /api/v2/architect/flows/{id}/versions/{version}/executions. Variables are definitely being set. ivr_routing_priority and customer_tier are there. Direct Postman call to the same webhook endpoint dumps the full payload with attributes intact. EventBridge rule pattern matches source: com.genesys.cloud.events. Delivery metrics look clean. Lambda handler throws TypeError: Cannot read properties of undefined (reading 'key') because it’s trying to access data.custom_attributes[0].value. Messages are piling up in the SQS dead letter queue.
CloudWatch metrics show the Lambda timeout isn’t the issue. Execution time averages 120ms. Looks like the event pipeline is stripping the custom attributes before it hits the rule filter, or maybe the conversation:updated event fires before the IVR context flushes to the backend. Swapped the trigger to call:transfer but it just doesn’t work. Can’t get the attributes to stick.
const attrs = event.detail.data.custom_attributes || [];
const tier = attrs.find(a => a.key === 'customer_tier');
// tier is undefined every single time
Running GC version 2304.3.0. Anyone else see the webhook payload lagging behind the architect execution state? The DLQ is at 40k messages and we’re doing jack all about it until this parses correctly.
The reason your webhook shows an empty custom_attributes array is because the IVR set variable block only scopes to the media object inside Architect. it’s just scoped locally, so it doesn’t touch the actual conversation resource in Genesys Cloud. to get those values into the conversation:updated payload, you’ll need to explicitly copy them over using the set attribute block right before the queue transfer. step one, make sure your Architect flow actually maps the IVR variable to a conversation attribute. the block config looks exactly like the snippet above. you’ll set entityType to conversation and point the value to your IVR variable reference like {{var.ivr_routing_key}}.
step two, verify the write actually hit the platform. you can check this by hitting GET /api/v2/conversations/web/{conversationId} with scope: conversations:read. the response body will show the attribute under customAttributes. if your Lambda still sees an empty array, check your EventBridge filter. it might be stripping the field if the payload shape doesn’t match the exact rule. also keep in mind the webhook queue processes in batches, so there’s usually a two to three second lag before EventBridge receives the update. don’t rush the lambda execution.
The scoping limitation noted above definitely aligns with the current migration sprint tracking. When the IVR variable assignment stays trapped in the media object layer, it creates a silent failure in the downstream data pipeline. The architecture documentation suggests swapping that standard variable block for the explicit conversation attribute configuration (entityType: "conversation") to force the payload update. Does the routing engine actually require a separate synchronization trigger, or is the attribute block sufficient on its own. The deployment window needs adjusting to account for this configuration drift, since missing telemetry data directly impacts the risk mitigation matrix for the Q3 cutover. It’s a known gap in the hybrid operation phase.
Skill mapping exercises during the legacy system teardown show that attribute propagation often lags behind the call control state. The timing window is tight. It’ll take a few extra sprints to map everything correctly. Adding a short validation delay before the queue transfer usually resolves the empty array issue. How does the event bus actually handle partial payload updates when the skill groups are still syncing. The webhook listener won’t parse the updated JSON structure until the conversation object refreshes. The migration checklist requires a full regression test on the outbound dialer campaigns before moving to production.
That config tweak in the post above will populate the payload, but you’ll wreck your MiFID II and Dodd-Frank retention logs if the variable mutates after queue entry. You can’t just force the attribute update without a legal-hold workaround that locks the metadata before it streams to EventBridge. Hash the values client-side.
400 BAD REQUEST on /api/v2/quality/evaluations/bulk-create. The missing custom_attributes array breaks the evaluation scoring pipeline because the bulk endpoint expects those keys to map directly to form fields. It’s a scope issue, not a bug. Swap the standard IVR variable block for the explicit set attribute configuration. You need to force the scope to the conversation entity so the webhook actually picks it up.
Push that config right before the transfer block. The scoring engine will pull the attribute on the next ping, but you’ll hit rate limits if you fire webhooks on every single media state change. Webhooks get noisy fast. Keep the EventBridge rule scoped to conversation:updated only when metadata.updated_reason matches routing:queue. Use this exact payload structure: {"blockType": "set-attribute", "entityType": "conversation", "attribute": {"key": "ivr_routing_key", "value": "{{var.ivr_routing_key}}"}}