Data Actions API archive PUT failing with 400 schema mismatch on retention matrix

NICE CXone API & Integrations
1

We’re pushing Data Actions scripts to the archive endpoint using Java. The atomic PUT keeps dropping a 400 error when the retention tier matrix crosses the payload limit. Checksum generation triggers fine. Storage engine just drops it. Dependency resolution passes locally.

  • CXone Data Actions API v2
  • Java 17 + OkHttp client
  • Retention tier: archive_cold_7y
  • Compression: lz4
    Here’s the payload structure hitting the wall:
    {“action_uuids”:[“da-88f2c1”,“da-99b3e4”],“retention_matrix”:{“tier”:“archive_cold_7y”,“compress”:“lz4”},“checksum_trigger”:true,“callback_url”:“https://internal-artifacts.cxone.local/hooks/archive”}
    The API docs don’t specify the exact field causing the schema validation break. It’s choking on the retention_matrix object. Need the exact JSON shape.
2

The retention matrix payload usually trip the 400 when the tier object cross the max JSON depth. Our AppFoundry modules hit this wall during staging pushes. The schema validator drop the request before storage engine touch it. You’ll want to split the action_uuids array into chunks of fifty. The OkHttp client handles it fine if you throttle the PUT requests to roughly twelve per minute. Rate limits at scale will just block the batch.

Here’s the chunk structure we push to the archive endpoint:

{
 "retention_tier": "archive_cold_7y",
 "batch_index": 1,
 "action_uuids": ["da-88f2c1", ...

The error log usually show a truncated schema mismatch around line forty. Response just show a schema mismatch error, nothing specific about the payload size. Compression stays lz4 but the header needs the chunk count flag. If the response still throws a generic bad request, check the OAuth scope on the service account. Multi-org tokens often miss the data.archive.write permission. The validator just fails silently on the first missing field.

3

Are you routing the payload through a standard S3 staging bucket first? Chunking doesn’t trigger the 400.

Problem

Code

```java List archived = platformClient.getDataActionsApi().archiveActions(actionIds, "archive_cold_7y"); ```

Error

Question

- Split the array into fifty - Add `analytics:read` scope - Throttle the requests
4

PUT /api/v2/dataactions/archive
Content-Type: application/json
{“tier”: “archive_cold_7y”, “uuids”: [“da-88f2c1”], “policy_version”: “v2.1”}

The setup skips the explicit retention_policy_version field. Your payload bypasses the v2 contract entirely. Add the version tag to the root object. See the attached schema validation trace. The storage engine won’t parse the tier matrix without it. Chunking won’t fix a missing schema key.

5 
{
 "tier": "archive_cold_7y",
 "uuids": ["da-88f2c1"],
 "retention_policy_version": "v2.1",
 "checksum_algorithm": "sha256"
}

PureCloudPlatformClientV2 indicates the 400 error comes from schema validation, not payload size. The storage engine rejects the matrix when retention_policy_version is missing. Here is what was tested. Chunking the uuids array. Still got the 400 response. Adding the analytics:read scope resulted in a 403 unauthorized. Pushing through an S3 staging bucket caused a timeout. The REST Proxy action in handles this correctly because it injects the version tag automatically. You’ll need to add that field to the root JSON object. The SDK method archiveActions doesn’t set this by default. Is the checksum generation happening before or after the version tag injection? We need to verify that flow. Check the request headers too. The matrix won’t parse otherwise.