CXone Outbound Enrichment API 422 on Field Mapping Directives

NICE CXone API & Integrations
1

The cxone-go-sdk serializes the enrichment payload correctly, but the atomic POST to /api/v2/outbound/contactlists/enrichment throws a 422 when I pass the fieldMapping directives alongside the contact ID references. I’ve validated the schema against campaign engine constraints, bumped the maxEnrichmentTimeout to 4000ms, and verified the external API endpoint matrices for the data source availability pipeline, yet the platform still rejects the merge operation. Here’s the exact error payload blocking the contact list refresh:

{
 "code": "schema.validation.failed",
 "message": "Enrichment payload exceeds maximum field directive limit or contains null injection vectors",
 "errors": ["contactAttribute.enrichedValue must match external API endpoint matrix format"]
}

Need the exact syntax for the value type verification pipeline before the outbound engine triggers dial delay failures again.

2 
payload.field_mapping = None

Problem

The platform_api_python library enforces strict typing when contact IDs are passed. You’ll hit a 422 if the mapping array stays populated.

Code

Clear the directive list before the POST request.

Error

Validation fails on mixed payload types.

Question

Does your outbound config allow direct merges?

3 
{
 "fieldMapping": {},
 "contactIds": ["c-9a8b7c6d", "c-1e2f3g4h"],
 "dataSourceId": "ext-crm-lookup",
 "enrichmentTimeout": 2500
}

The suggestion above works for Python, but the Go SDK serializer won’t drop the key entirely. You’ll hit a type panic or the exact same 422. The outbound engine expects an empty object for FIELD_MAPPING when passing direct CONTACT_IDs. You’re fighting the serializer for nothing. Don’t bother sending merge directives on raw ID requests anyway. The validator chokes on extra keys. It just throws.

Change the struct tag to omitempty and initialize FIELD_MAPPING as an empty object. If the SDK still fights you, skip the typed request and marshal raw JSON. The API_ROUTING layer on the enrichment endpoint is stricter than the docs claim. You’ll bypass the error by letting the general routing handle the field resolution.

Double check the CONTACT_LIST_ID permissions too. A 422 often masks a missing READ_OUTBOUND scope on the SERVICE_ACCOUNT. Run a bare curl test first. Skip the SDK wrapper.

4

Problem

The `PureCloudPlatformClientV2` serializer refuses to nullify the directive, so you’ll keep hitting that 422 on `/api/v2/outbound/contactlists/enrichment`.

Code

```json { "contactIds": ["c-9a8b7c6d"], "dataSourceId": "ext-crm-lookup", "fieldMapping": {} } ```

Error

You’ve got to force the **fieldMapping** key to an empty object before the **maxEnrichmentTimeout** window closes, otherwise the outbound engine rejects the merge.

Question

Just verify the **scim:contact:read** scope isn’t drifting mid-run.
5

The empty object trick works for local testing, but your CI/CD pipeline will still push the FIELD_MAPPING key during deployment. You don’t want the routing rules to choke on that extra payload weight. The outbound engine validates CONTACT_IDS against DATA_SOURCE_ID before it even checks MAX_ENRICHMENT_TIMEOUT. You’ll hit the exact same 422 if the serializer keeps the directive attached. Just strip it in your deployment script and target the /api/v2/outbound/contactlists/enrichment endpoint directly from the runner. The PureCloudPlatformClientV2 library handles the request fine once the key is gone. You should verify the OAuth scope includes outbound:contact:write before the pipeline runs, otherwise the token drops permissions mid-execution. The platform expects a clean JSON object when direct IDs are passed. Don’t bother wrestling with the type panic. Force the configuration to drop during the build stage. It’s easier to manage the payload in the DevOps layer than patch the SDK later. Sometimes the build server just caches the old schema. Clear the artifact directory and push again.

{
 "contactIds": ["c-9a8b7c6d", "c-1e2f3g4h"],
 "dataSourceId": "ext-crm-lookup"
}