To reflect changes to the Payment Hardware API (formerly Smart Terminal API), we have updated all Payment Hardware API guides. This involved changing a number of URLs for specific guides in addition to guide content.
We have implemented a new webhook event that will notify merchants when a payment is cancelled on the Smart Terminal device. This can be paired with card transaction webhook events, and will notify you when a payment should be reattempted due to being cancelled on the device by the end user.
We have released an update to the Payment API to support 36 character UUID keys for idempotency. The release is backwards compatible, so existing 25 character keys will continue to be accepted.
The tipAmount parameter has been removed from the available invoice sub-object parameters for the Process Verify Transaction and Process Preauth Transaction endpoints.
