Hello. when i create a checkout, i can set a reference_id field in the body of the request. my problem is that i can’t see this reference_id field in the webhook payload, so it is hard to connect the webhook event to the correct checkout. i know i can use the generated order_id to connect the entities, but this is a bit problematic for us, because we have a distributed architecture, and some of our customers has their own server, and since the webhook is defined globally (and not per call) we have a situation where the webhook call is received by a different server than the server that initiated the checkout call, and without a reference_id it is a bit complicated to know which server initiated the call and complete the transaction.
So my question is - is there a way to add a reference_id or any other custom data to the checkout that will appear in the webhook payload?