We will be performing a Production release this week to introduce the changes below.
We’re adding structured error message responses to iFrame messages when an error occurs (e.g., malformed requests or invalid/missing data). These responses are informational and intended to streamline development and troubleshooting.
What to expect:
Clear error type and description returned in the response
No change to successful message behavior
Optionally, you can log or display these messages in your UI