Has anyone figured out why the Interactions API throws a 400 error during our Zendesk migration? The request fails when mapping historical tickets to Genesys Cloud interactions.
We are using the standard JSON payload structure recommended in the documentation. The error message cites an invalid field format for the external reference ID.
In Zendesk, this field accepts any string. Genesys Cloud seems stricter. Is there a specific format requirement we are missing?
Any help with the exact schema constraints would be appreciated. We are stuck on this step.
Have you tried sanitizing the external reference ID before the API call?
- Remove special characters like
# or &
- Ensure the string length is under 255 chars
- Check for leading/trailing whitespace
Genesys Cloud rejects non-alphanumeric sequences in interaction mappings.
Have you tried validating the externalId against strict alphanumeric constraints? The suggestion above is correct, but be wary of Unicode normalization issues. Genesys Cloud often rejects strings with invisible zero-width characters from Zendesk exports. Sanitize using encodeURIComponent before ingestion.
Make sure you verify the exact timestamp alignment between the dashboard snapshot and your bulk export window. The Europe/Paris region often introduces slight latency in data replication, which can cause intermittent 400 errors during high-volume migrations.
From an AppFoundry perspective, building robust integrations requires handling these edge cases explicitly. The suggestion above regarding sanitization is valid, but the root cause is frequently a mismatch in the JSON structure expected by the Data Action JavaScript environment versus the actual payload schema provided by the Zendesk webhook or export tool. When migrating historical data, the external reference ID must strictly adhere to Genesys Cloud’s alphanumeric constraints. Invisible zero-width characters from Zendesk exports are a common culprit. Implementing a robust rate-limiting wrapper is essential when interacting with the Interactions API, especially under high-concurrency load tests. The documentation suggests using encodeURIComponent before ingestion to avoid Unicode normalization issues. This usually happens because of strict validation rules on the platform side.
it depends, but generally… the 400 error during bulk interaction mapping is rarely about the external ID string itself. the issue usually stems from how Genesys Cloud validates the type and subType fields in conjunction with the timestamp precision. when migrating from Zendesk, the timestamps often contain milliseconds or timezone offsets that Genesys Cloud’s Interaction API rejects if not strictly ISO 8601 UTC formatted.
the suggestion above about sanitizing special characters is valid for the externalId, but if the payload structure isn’t precise, it will fail regardless. specifically, the createdTime and updatedTime fields must be in UTC without milliseconds. if you are using a Data Action to push this data, ensure the timestamp transformation happens before the HTTP request.
here is a snippet of how the payload should look for a successful ingestion:
{
"externalId": "ZD-123456",
"type": "webchat",
"subType": "inbound",
"createdTime": "2023-10-27T14:30:00Z",
"updatedTime": "2023-10-27T14:45:00Z",
"participants": [
{
"userId": "user_123",
"role": "agent"
}
]
}
note the lack of milliseconds in the timestamp. also, ensure the externalId is unique across the entire organization, not just the Zendesk instance. duplicates cause silent failures or 409 conflicts that sometimes manifest as 400s in batch processing. if you are using a webhook payload, add a transformation step to strip any trailing whitespace or invisible unicode characters. the documentation for the Interactions API is strict on this. try adjusting the timestamp format first. if that doesn’t resolve it, check the subType values against the allowed enum values for your specific channel.