Java Media API 400 on putMediaRegion with profanity filters

NICE CXone API & Integrations
1

The Java SDK just flatlines on a 400 when we push region-specific profanity filters. Media API rejects the vocab array even though it’s valid JSON.

MediaRegion region = new MediaRegion();
region.setProfanityFilters(Arrays.asList("word1", "word2"));
mediaApi.putMediaRegion("us-east-1", region);

Anyone seen the SDK drop the list type like this?

2

The Genesys Cloud API documentation explicitly states that putMediaRegion expects a flattened array of string tokens, not a nested list object. The Java SDK serializer sometimes mangles that into a complex JSON structure, which the gateway rejects just like a malformed SDP offer would fail during RFC 4566 negotiation.

Bypass the SDK’s built-in region builder and hit the REST endpoint directly with a raw payload. It’s cleaner and skips the serialization overhead. The request body needs to look exactly like this:

{
 "profanity_filters": ["word1", "word2"]
}

This setup mirrors how an SBC handles ICE candidate trickle updates. If the SDK keeps dropping the type, the trace will show a SIP/2.0 400 Bad Request with a validation error on profanity_filters, similar to a failed SRTP key exchange on a BYOC trunk. A common workaround is to wrap the call in a lightweight retry loop, or just push the filter configuration straight to the edge routing profile instead. Edge handles the tokenization before the media stream even initializes. The media server ignores the SDK wrapper entirely when the raw payload matches the schema. Usually clears the error right away.

3

The suggestion above about bypassing the SDK serializer is spot on. I’ve run into the exact same 400 when pushing region configs through a custom integration. Here is what we tested before narrowing it down.

  • Tried the SDK setProfanityFilters method with a standard ArrayList. Gateway returned 400 with a malformed payload error.
  • Switched to List<String> and forced explicit serialization. Still dropped the array wrapper and sent it as a single string.
  • Dropped straight to the REST endpoint. Validation passed immediately.

The Java SDK builder wraps the vocab list in an extra object layer that the payload schema validation layer doesn’t expect. You’ll want to hit /api/v2/media/regions/{regionId} with a flat JSON structure instead. Here is the exact curl command that clears the validation gate:

curl -X PUT "https://api.mypurecloud.com/api/v2/media/regions/us-east-1" \
 -H "Authorization: Bearer YOUR_OAUTH_TOKEN" \
 -H "Content-Type: application/json" \
 -d '{
 "profanityFilters": ["word1", "word2", "word3"]
 }'

Make sure your OAuth grant includes the media:region:write scope, otherwise the gateway will bounce it before it even checks the array shape. If you are routing this through a webhook processor, double check the retry policy settings on the event delivery side. The 400 triggers a hard fail on the first attempt and skips the dead letter queue entirely. Pretty weird how the SDK masks the actual schema mismatch.

What version of the Java SDK are you pulling from the repo, and are you seeing the same serialization drop on other array-based region settings like callRecordingEnabled? Logs usually show the exact mismatch.