Webhooks
Webhooks are used to connect different systems. They provide a way of how they can talk with each other.
So whenever there is an update for an order, Mollie will fire a webhook and notify OroCommerce about any updates, such as payment status.
This means, that OroCommerce will need to provide a webhook endpoint for these notifications. And that is done by the Mollie integration.
In most cases, it's not necessary to configure anything to receive notifications.
However, if you are in a testing or staging environment, please make sure this URL is publicly available:
"http(s)://{{your-domain}}/payment/callback/notify/{{transaction-access-identifier}}/{{transaction-access-token}}"
If you want to create a whitelist for the IP range of Mollie, please refer to this page: https://help.mollie.com/hc/en-us/articles/213470829
