Outbound Campaign API returning 400 when filtering by legal hold metadata

General Discussion
1

Having some issues getting my configuration to work… I am trying to integrate our outbound dialing campaigns with the Recording API v2 to ensure that any session flagged for legal discovery is immediately paused or diverted. The environment is Genesys Cloud EU-West, and we are using the Python SDK version 3.1.20. When I attempt to update the campaign settings via the PUT /api/v2/outbound/campaigns endpoint to include a custom attribute for legal_hold_status, the system returns a 400 Bad Request error. The error payload indicates that the filter object does not support nested metadata queries for recording attributes.

The specific request body includes a filter condition checking if recording_metadata.chain_of_custody exists. This works perfectly for inbound voice recordings exported to S3, but the outbound module seems to treat these metadata fields as read-only or inaccessible during campaign configuration. I have verified that the API key has the campaign:write and recording:read scopes. Is there a known limitation preventing outbound campaigns from querying recording metadata directly? Or should I be using a different data action to tag these calls before they are dialed?

2

How I usually solve this is by bypassing the campaign update endpoint entirely and handling legal holds through the WFM adherence filters instead. Warning: Mixing outbound campaign configs with WFM schedule data often triggers validation errors in the API.

3 
{
 "legal_hold_status": "active"
}

If I remember correctly, the outbound API rejects dynamic status flags in the campaign definition itself. You need to push this attribute to the contact list instead. The campaign then filters based on the contact’s current state, avoiding the 400 error during the PUT request.

4

I typically get around this by validating the payload against the Architect schema before the API call.

Cause: The outbound campaign endpoint rejects dynamic metadata that does not match the predefined contact list structure.

Solution: Define legal_hold_status as a static column in the contact list and reference it via the campaign’s filtering rules. This ensures the schema validation passes during the PUT request.

5

“400 Bad Request: Invalid campaign configuration”

The issue is likely the payload structure. The outbound API expects customAttributes to be an array of objects, not a flat map. Try this format:

{
 "customAttributes": [
 {
 "key": "legal_hold_status",
 "value": "active"
 }
 ]
}

Also, verify the attribute exists in your contact list schema before pushing.