Sharing one more transaction, from Adri, that matches this parameter:

1. Gravy Transaction ID 2c003eb3-f937-4ac4-9cb6-021f12ef9c1a;

Status Authenticating since March 27th, not visible at Adyen
Ticket https://wikimedia.zendesk.com/agent/tickets/1858592

2. Gravy Transaction ID 63282b06-ed9f-44f2-a625-63024c4c92d8

Status Authenticating 3D since April 11th, not visible at Adyen
Ticket https://wikimedia.zendesk.com/agent/tickets/1864685

Just adding three more examples of transactions at authenticating in Gr4vy and not findable in Adyen by email or reconciliation id:

This is because Gravy assigns a transaction ID earlier in the process than Adyen does.

For example

1. We make a createPayment call to gravy, and gravy makes a call to Adyen.
2. Adyen detects that the payment needs a redirect for donor auth (either to a wallet site or for 3ds)
3. Adyen assigns some transient session ID that we/gravy can use to look up results of that redirect, and returns the redirect URL to Gravy
4. Gravy assigns a durable transaction ID as soon as they get the result back from Adyen (where the result is not a simple validation failures).

If the donor does not complete the action and get back to Adyen's site, we end up with the state you see here - still at 'authenticating' in Gravy, and nowhere to be found at Adyen.

5. If the donor DOES complete the action and make it back to Adyen's site, Adyen then assigns a transaction ID and indicates whether the auth was successful.

Gotcha. Thank you for sharing this context, @Ejegg! So it sounds like donations being in Gr4vy but not Adyen is expected as they just didn't get far enough in the process for the attempt to also be visible in Adyen.

I'm guessing in terms of a donor response then if a transaction is stuck at "authenticating" in Gr4vy we should go with our messaging that speaks to authentication of > "The error code given by our payment processing system suggests that your bank did not authorize the transaction, which could be due to an invalid security code. Sending a confirmation code by SMS is required by some banks. Please retry your donation or contact your bank so they can help you."?

Yes @AMJohnson that sounds like good advice.

Thank you, @Ejegg!