To resend an IPN notification, go to the relevant order record in the BlueSnap merchant console (under Transactions > Find a Transaction in the left menu). In the Resend menu, select IPN and then click Send.
If BlueSnap does not receive a confirmation that you received the IPN, we will resend the IPN every 4 hours, up to 11 attempts. Note: Only Default IPN types will be resent.
A single IPN is sent per order.
You will need to set up a URL where the IPNs can be sent and then enable IPNs in your BlueSnap account.
See Setting up IPNs.
You can simulate an IPN by placing a test order and having the IPN emailed to you. It's also possible to generically test IPN's using the IPN simulator found in the console under "general settings".
See Simulating an IPN for testing/troubleshooting.
In you are using the BlueSnap API, you'll get information about transaction events via the usual API responses. However, there is no API call involved for offline events like disputes, chargebacks and subscription cancellations, so you will need IPNs in order to get information about those events.