Data Residency Mismatch Error When Migrating Zendesk Tickets to Genesys Cloud Interactions

Context:
We are currently in the final stages of migrating our support infrastructure from Zendesk to Genesys Cloud. The team is enthusiastic about the unified platform, but we are hitting a wall with data residency compliance. Our Zendesk instance was hosted in the US East region, but our new Genesys Cloud org is configured for the EU West region to meet GDPR requirements. We are using the Genesys Cloud CX API to backfill historical ticket data as interactions. The migration script uses Python 3.9 with the genesys-cloud-sdk-python version 2.2.0. We are mapping Zendesk ticket IDs to Genesys Cloud interaction IDs via the externalId field in the interaction creation request.

The specific issue arises when attempting to create interactions for contacts that have existing PII data in Genesys Cloud. The API call to POST /api/v2/conversations/interactions returns a 422 Unprocessable Entity error. The error body contains: {"errors": [{"code": "DATA_RESIDENCY_VIOLATION", "message": "Contact data cannot be associated with an interaction in a different data residency region."}]}. This is confusing because the contact records were already migrated to the EU West region using the Contacts API before this step. In Zendesk, ticket metadata was stored alongside the ticket object, but Genesys Cloud separates contact data from interaction data. We verified the contact’s dataResidency field in the API response, and it correctly shows EU. However, the interaction creation fails.

We suspect this might be related to how the externalId is being resolved or cached during the migration batch process. The requests are being sent in batches of 50 using async/await patterns. Is there a specific header or parameter we need to include to force the data residency check to re-evaluate? Or is this a known limitation when backfilling historical data across regions? We need to ensure all historical interactions are properly linked to their contacts for reporting purposes.

Question:
How can we resolve the DATA_RESIDENCY_VIOLATION error when creating interactions via API for contacts that are already confirmed to be in the correct data residency region? Are there any workarounds for bulk migration scenarios where the contact and interaction creation are decoupled?

You need to verify the data residency tags within the interaction payload before initiating the bulk migration. The platform enforces strict regional boundaries for historical data imports to ensure GDPR compliance. If the source metadata does not explicitly declare the correct region, the API rejects the request.

Ensure the attributes object contains the correct data_residency flag. This aligns the incoming Zendesk tickets with your EU West organization settings.

{
 "interactionId": "uuid-here",
 "type": "email",
 "attributes": {
 "data_residency": "eu-west-1",
 "source": "zendesk_migration"
 },
 "state": "closed",
 "createdDate": "2023-01-01T00:00:00.000Z"
}

Review the queue assignment logic in the Architect flow as well. Mismatched region tags often cause downstream errors in performance dashboards. Validate the payload structure in a test environment first to avoid blocking production metrics.

This is caused by mismatched OAuth scopes during the initial multi-org handshake. The AppFoundry integration must explicitly request the interaction:read scope for the target region. Verify your application.json configuration includes the correct regional endpoint.