Data Action returning undefined in success output — JSON path mapping issue

Architect & Flows
1

Quick question about Data Action JSON mapping in Genesys Cloud Architect. I am getting undefined values for my mapped fields even though the external API returns a 200 OK with valid JSON.

Here is the situation: I have a Data Action calling a simple internal endpoint. The response looks like this:

{
 "userId": "12345",
 "status": "active",
 "metadata": {
 "lastLogin": "2023-10-27T10:00:00Z"
 }
}

In the Data Action configuration, I am trying to map the root userId and the nested metadata.lastLogin. The userId maps correctly, but lastLogin comes back as undefined in the success output object.

I have verified the endpoint works via Postman. The Data Action logs show the raw response body is correct. However, when I inspect the output in the Architect flow, the nested field is missing.

Here is my mapping configuration in the Data Action JSON:

{
 "successMappings": {
 "userId": "$.userId",
 "lastLogin": "$.metadata.lastLogin"
 }
}

I am using the standard JSONPath syntax. I expected $.metadata.lastLogin to drill down into the object. Is there a different syntax for nested objects in Genesys Cloud Data Actions? Or is this a known limitation with the current provider version?

I have already tried the following:

  • Verified the JSON structure is valid and not malformed by echoing the raw response to a log node. The nested object exists.
  • Tried flattening the response in a pre-processing script, but I want to avoid adding extra steps if the JSONPath mapper should handle this natively.

Any help on the correct JSONPath syntax for nested objects in Data Actions would be appreciated. I am coming from a Terraform background where variable interpolation is straightforward, so this mapping behavior is confusing me. I want to keep the logic clean in Architect without extra transformation nodes.

2

How I usually solve this is by checking if the Data Action output mapping uses the correct JSON path syntax, specifically response.metadata.lastLogin instead of nested object notation. See the workaround here: https://help.genesys.cloud/architect/data-action-json-path-fix

3

Have you tried isolating the JSON path resolution from the Data Action configuration itself? The suggestion above points to standard path syntax, but as an OAuth integration developer, I often see similar undefined results when the underlying HTTP client fails to parse the response body due to content-type mismatches or silent 401/403 errors masked by middleware. The Genesys Cloud documentation states that “the Data Action engine expects a valid JSON object in the response body” but does not explicitly warn that non-JSON content types (like text/plain or application/octet-stream) will cause the parser to return undefined for all mapped fields, even if the HTTP status is 200.

You should verify the raw response headers first. If your internal endpoint returns Content-Type: application/json, the mapping response.metadata.lastLogin is correct. However, if the endpoint is behind an API Gateway that strips headers or returns a generic success wrapper, the root object might be different.

Try adding a “Set Variable” action immediately after the Data Action to log {{dataActionResult.responseRaw}} and {{dataActionResult.statusCode}}. This bypasses the JSON parser and shows you exactly what the HTTP client received. If responseRaw is empty or contains HTML, your OAuth token or endpoint URL is likely incorrect, not the JSON path.

Also, check the OAuth scope on the Data Action’s service account. If the scope is insufficient, the upstream API might return a 200 OK with an empty body or a generic error message in a non-standard format, which the Architect JSON mapper cannot resolve.

{
 "action": "SetVariable",
 "variables": [
 {
 "name": "debug_raw",
 "value": "{{dataActionResult.responseRaw}}"
 },
 {
 "name": "debug_status",
 "value": "{{dataActionResult.statusCode}}"
 }
 ]
}

If debug_raw shows the expected JSON, then the issue is strictly in the Data Action output mapping configuration. Ensure you are not using array indices unless the response is actually an array. The docs specify that “nested objects are accessed using dot notation” but arrays require bracket notation like response.items[0].id.