Deletes a message in a chat session and its associated response.
| REQUIRED | KEY | TYPE | DESCRIPTION |
|---|---|---|---|
| Yes | chatSessionId | str | Unique ID of the chat session. |
| Yes | messageIndex | int | The index of the chat message within the UI. |
| KEY | TYPE | DESCRIPTION |
|---|---|---|
| success | Boolean | true if the call succeeded, false if there was an error |
| TYPE | WHEN |
|---|---|
| DataNotFoundError | `chatSessionId` is not found. |