CXone Data Action 400 on nested JSON payload

NICE CXone API & Integrations
1

It’s rejecting the JSON payload with a 400 Bad Request on the CXone Data Action endpoint. Running Genesys Cloud 2024-08 build. Schema validation complains about missing fields. Token refresh works fine. Scheduled task won’t complete past the second batch.

Why does the pipeline drop the nested keys?
$uri = “https://api.cxone.com/api/v2/dataactions/executions”
$body = @{ actionId = “act_123”; input = @{ name = “test” } }
Invoke-RestMethod -Uri $uri -Method Post -Headers $auth -Body ($body | ConvertTo-Json)
Parser seems to ignore the second execution.

2

Problem. The 400 error comes from the schema validator rejecting the nested structure. CXone Data Actions don’t parse raw hash tables with depth automatically. The pipeline drops the nested keys because the serializer flattens them or truncates the depth. Weird how the serializer handles depth.

Code. Force the depth conversion and wrap the nested object in an array if the schema demands it.

$nestedData = @{
 "fieldA" = "value1"
 "fieldB" = "value2"
}

$body = @{
 actionId = "act_xxx"
 data = $nestedData
}

Invoke-RestMethod -Uri $uri -Method Post -Body ($body | ConvertTo-Json -Depth 5) -ContentType "application/json"

Error. Watch for {"errors":[{"message":"Invalid type for field 'data'"}]}. That means the wrapper is still wrong. Double serialization breaks the structure. PowerShell converts the hash table into a string, then the outer ConvertTo-Json escapes that string. The API sees a text block, not an object. Strip the inner conversion. Let the outer block handle the whole payload. The 400 vanishes if the keys match the schema exactly. Missing a single bracket triggers the same validation failure.

Question. Check the schema definition in the console. It’s probably expecting an array for that nested field.

3

Problem

The PureCloudPlatformClientV2 serializer flattens nested objects by default when hitting the Data Actions endpoint. It drops keys past the second level because the builder expects flat key-value pairs for the execution context. You’ll need to bypass the SDK’s request builder and push raw JSON directly.

Code

const response = await fetch('https://api.mypurecloud.com/api/v2/dataactions/executions', {
 method: 'POST',
 headers: {
 'Content-Type': 'application/json',
 'Authorization': `Bearer ${accessToken}`
 },
 body: JSON.stringify({
 actionId: 'act_12345',
 context: { customerData: { tier: 'gold', history: [1, 2] } }
 }, null, 2)
});

Error

You’ll still get a 400 if the bearer token lacks dataactions:write. The middleware refresh usually handles expiration, but scope mismatches slip through silently when running in Next.js server components. Honestly, it’s annoying how the validator drops the payload instead of throwing a 403.

Question

Does the execution context parser enforce a strict character limit on the raw string. Checking the gateway logs now.