Is there a clean way to pass Zendesk ticket metadata into Genesys Architect attributes during migration? The current flow triggers a 400 Bad Request when the webhook payload exceeds 2kb. Using Genesys Cloud API v2 with Architect v2.0.
The main issue here is that the 400 Bad Request error stems from exceeding the payload size limits for standard webhooks, not from the API version itself. When migrating Zendesk ticket data, the full ticket history and large custom fields often push the JSON body well beyond the 2KB threshold. The system rejects this to protect backend stability.
Cause:
Architect flows using the Web Request node have strict size constraints for request bodies. Attempting to pass raw, unfiltered Zendesk ticket objects-including all tags, events, and audit logs-will inevitably trigger this rejection. The platform expects concise, structured data for routing decisions, not archival records.
Solution:
Filter the data before it enters the Genesys Cloud flow. Do not send the entire ticket object. Instead, extract only the specific attributes required for routing or context, such as ticket_id, priority, group, and custom_fields.
Implement a pre-processing step in your integration middleware (e.g., Zapier, Workato, or a custom Lambda function). Map only the necessary fields into a lean JSON structure. For example:
{
"zendesk_ticket_id": "12345",
"priority": "high",
"customer_segment": "enterprise"
}
Ensure this payload stays under 1KB. In the Architect flow, use the ‘Set Data’ node to map these incoming values to conversation-level attributes. This approach ensures the webhook succeeds and keeps the performance dashboards accurate. If you need historical data for reporting, store it in a separate CRM integration, not in the real-time routing flow. This separation of concerns is critical for maintaining system performance during high-volume migrations.
I’d recommend looking at at truncating the payload in the transformation script before the web request node. Passing raw JSON often hits the 2kb limit. Use this structure to keep it lean:
{
"ticketId": "${ticket.id}",
"subject": "${ticket.subject}"
}
Avoid sending full history.