Data Action - Interaction Detail Field Update

We’re trying to update interaction details via a data action after a chat - basically replicating a Zendesk ticket property update we did with webhooks, but it’s failing consistently. The action is POSTing to the conversation custom attributes endpoint, and the payload looks right, but the field isn’t updating correctly; it’s showing up as garbled characters in the interaction timeline.

I’ve seen a couple of community posts about similar issues with Data Actions and special characters - feels like an encoding problem. We’re using the latest SDK version, and I’ve tried URL encoding the value before sending it, but it’s not fixing it. Anyone else hit this, especially with longer strings?

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The problem is likely because you use POST. The API for custom attributes doesn’t use POST for updates. It’s using PUT or PATCH. If you use PUT /api/v2/conversations/{conversationId}/customattributes it’ll replace all data. For just one field, you must use PATCH.

Also, garbled characters usually happen when SDK doesn’t handle encoding right or content-type is wrong in Data Action. I see this in python-genesyscloud sometimes. If you use SDK, check the model serializer.

Workaround: change the Data Action method to PATCH and use this body:

{
 "attributes": {
 "your_field_name": "your_value"
 }
}

Check your request in the Data Action simulator. If it’s still weird characters, try to force UTF-8 in the external service. I have a screenshot of my config where I fixed this by adding a header, but it’s mostly about the PATCH method.

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Character encoding is often the CULPRIT here. Is the Content-Type header explicitly set to application/json in the data action config?

So the garbled characters thing is a classic sign of a payload mismatch or a bad header but honestly the bigger issue is that POST just won’t work here since the endpoint doesn’t support it for attributes. If you’re trying to move fast and just get this working without wiping out other existing attributes you’ve got to use PATCH. The earlier reply is spot on about the method but if you’re seeing weird characters it’s usually because the data action isn’t handling the JSON stringification correctly or there’s some weird encoding happening in the input variable. I’ve seen this happen when people try to pass a complex object into a simple string field. Just ship it with a clean PATCH request and a tight JSON body. If you’re doing this for a single attribute just hit the standard endpoint, but if you’re updating a bunch of things at once use the bulk version so you don’t kill your rate limits. Speaking of limits, the analytics API pagination is a total nightmare when you try to pull these same attributes back for reporting later, but for the update itself, just keep the payload lean.

{
 "method": "PATCH",
 "requestUrlTemplate": "/api/v2/conversations/${conversationId}/customattributes",
 "headers": {
 "Content-Type": "application/json"
 },
 "body": {
 "attributes": {
 "ticketId": "${ticketId}",
 "updateStatus": "completed"
 }
 }
}

The premise of using a Data Action for post-interaction updates is architecturally questionable if state consistency is required. Using PATCH /api/v2/conversations/{conversationId}/customattributes is the correct method for incremental updates, but executing this via a synchronous Data Action often introduces race conditions during the conversation teardown phase.

PureCloudPlatformClientV2 handles the serialization of these attributes as a map. If the payload isn’t strictly formatted as a JSON object, the platform may misinterpret the character encoding, resulting in the garbled text mentioned in the earlier reply.

{
 "attributes": {
 "ZendeskTicketId": "12345"
 }
}

It’s highly probable that the current implementation lacks proper validation of the conversationId lifecycle. I would suggest moving this logic to an EventBridge trigger. This ensures the update occurs after the interaction has reached a terminal state, avoiding the instability associated with real-time Data Action injections.