How to test TokenNotificationURL in sandbox?

We are trying to implement the the tokenNotificationUrl in a deferredBilling request so that we can get MPAN tokens (when supported) back from ApplePay.

We want to be able to test that the events are working and firing. I have tried creating a deferred billing request, and then unlinked my test card from my test account and did not receive any event at my token notification endpoint. What is the best way to approach this from a lower environment perspective?

We are trying to simulate the UNLINK EventType in the MerchantTokenEventResponse.

Also can you confirm that providing this URL is what determines if we get an MPAN vs a DPAN (when MPAN is supported) or is there a different mechanism that turns that on?

How to test TokenNotificationURL in sandbox?
 
 
Q