Predictive Routing Campaign Fails with 422 on Contact List ID

Trying to spin up a predictive routing campaign for our Berlin shift, but the status keeps flipping to FAILED with a 422 Unprocessable Entity on the /api/v2/predictiveoutbound/campaigns endpoint. The CSV imports fine via Python SDK v3.1.4, but it’s throwing a schema validation error on the contact.list_id field while the WEM pacing rules sit doing jack all.

In CIC we used to just drop the campaign into the outbound queue and let the attendant handle the pacing without all this JSON gymnastics. [attached: campaign_config.png]

It’s usually pulling from draft list instead of published. The /v2/predictiveoutbound/campaigns v2.19 endpoint throws 422 when agent shift swap preferences override the list during weekly publish edge case. Switch the contact.list_id to active GUID and it clears.

The contact.list_id serializer in genesyscloud/models/predictiveoutbound/campaign_create_request.py line 87 is silently dropping draft GUIDs during JSON encoding, which triggers the 422. You’ll need to patch the request body with a published UUID before the SDK wraps it, otherwise the validation step always fails on the first run. Are you hitting the Tokyo edge or Berlin, since the SDK routing logic splits the traffic anyway?

Problem
The predictive campaign creation failed due to the contact list state. The endpoint requires a published list identifier. The draft GUID triggers the schema validation failure. The validation error masks the real issue. The draft list state prevents the campaign engine from locking the contacts.

Code
Switched the list reference to the active version. The Python SDK handles the object, but the ID must match the published resource. Don’t pass the draft UUID. The schema rejects it outright.

from genesyscloud import predictive_outbound_api

# Retrieve the published list ID before campaign construction
list_response = predictive_outbound_api.get_predictiveoutboundcontactlist(contact_list_id=draft_id)
published_id = list_response.id

# *Ensure this matches the active status*
campaign_body = {
 "name": "Berlin Shift Campaign",
 "contact": {
 "list_id": published_id
 },
 "pacing": {
 "wem_enabled": True
 }
}

Error
The 422 Unprocessable Entity response vanished. The campaign status moved to CREATED. The WEM pacing rules engaged immediately. The platform client library doesn’t always surface the underlying REST latency for batch operations. You’ll see gaps in the metrics.

Question
Does the platform client expose specific transaction traces for the predictive outbound endpoints? The latency on list polling seems inconsistent during peak load. Need to map the NR custom events to the campaign lifecycle.

The draft list theory is spot on. I hit this same wall yesterday when porting our Five9 dialer logic over. Here’s the debug path I used to isolate the issue.

First, I pulled the list details directly to verify the actual state before sending the campaign payload. Second, I checked if the GUID was a draft version. Third, I swapped the ID in the request body. Double-checking the OAuth scope seemed necessary too, thinking maybe predictiveoutbound:campaign wasn’t attached, but the token was fine. I tried retrying the POST request with a jitter delay, thinking it was a race condition during the publish phase, but that didn’t change anything. The error response body was empty except for the status code, which made debugging a pain. I spent twenty minutes staring at the JSON payload wondering why the ID looked valid. It’s a UUID, it’s a string, everything seems right. Then I checked the list status endpoint. I also noticed the list name in the response sometimes includes a timestamp suffix, which helped confirm I was looking at the right object. The SDK response object structure is a bit nested, so drilling down to body.state took a few print statements to figure out.

from genesyscloud import predictiveoutbound_api

api_instance = predictiveoutbound_api.PredictiveoutboundApi(platformClient)

# Verify the list state explicitly before creating the campaign
list_details = api_instance.get_predictiveoutbound_contactlist(list_id="YOUR_LIST_GUID")
print(f"Current state: {list_details.body.state}")

if list_details.body.state != 'published':
 print("List isn't published yet. Campaign creation will 422.")

Gotcha here: the state has to be strictly ‘published’. If it’s stuck in ‘available’ or ‘processing’, the endpoint rejects the campaign creation immediately.

The Python SDK doesn’t warn you about this mismatch until the POST request hits the server. I was passing the ID from the import response, which points to the draft object by default. You have to grab the published version ID manually. The import response gives you the draft ID, and if you feed that into the campaign create request, the validator screams. Hardcoding the published GUID into the contact.list_id field usually clears the 422, assuming the pacing rules aren’t conflicting with the shift preferences.