Gpay is not accecpted by multi card payments

[ChrisCoder123]

Hi,

i have made the following observation.
I did a checkout on the SumupSolo via the cloud API.
I "paid" (it is a testaccount) with my smartphone an Google Pay. This worked 2 times, but the third time, my phone said i cannot pay wit Gpay on this device (the sumup)
As i have done this in a time period of probably 1-2 minutes, i guess you have implemented a kind of security feature, that a customer is not able to pay with the same device/card multiple times in a minute.
Thus i waited 15minutes and tried it again, but I have the same behaviour.
The Api itself does not give any specific information, it just says Transaction pending.

shop_server  | 2026-01-18 18:18:24,228 [INFO] - HTTP Request: GET https://api.sumup.com/v2.1/merchants/m..../transactions?client_transaction_id=xxxxx"HTTP/1.1 200 OK"
shop_server  | 2026-01-18 18:18:24,232 [DEBUG] - receive_response_body.started request=<Request [b'GET']>
shop_server  | 2026-01-18 18:18:24,233 [DEBUG] - receive_response_body.complete
shop_server  | 2026-01-18 18:18:24,234 [DEBUG] - response_closed.started
shop_server  | 2026-01-18 18:18:24,235 [DEBUG] - response_closed.complete
shop_server  | 2026-01-18 18:18:24,236 [DEBUG] - Transaktions-Update f├╝r 495acb8f-981c-4db9-9347-613861952b86: Status=PENDING, SumUp-ID=3ef7ed20-8834-482c-bee9-950172d36315
shop_server  | 2026-01-18 18:18:24,236 [INFO] -  Status der Transaktion: PENDING

Would be nice, if you could give some information, if you have a kind of security mechanism, if you pay to often and to fast with the same card on the same solo device?
Or is this triggered by the payment provider, but then i would expect a return code.

[VitorVRS]

Hey @ChrisCoder123
Did you share the correct ID? That one failed due to cancellation.

[ChrisCoder123]

Hi,
this seems a little bit tricky.
Following observation,

• I pay with GPay on the solo device
• everything works.
• I pay again on the same solo device, after a short period of time (30 seconds later)
• everything works
• I pay again on the same solo device, after a short period of time (30 seconds later)
• I get an error on my mobile Phone, Gpay is not accepted, however the solo device is still waiting for transaction

It looks like Gpay, and probably not the Solo, is blocking multiple payments in a short term of time on the same device.
That's why at the end you see a cancellation, because from your side, Gpay never paid.

I was a little bit afraid, if Gpay blocks now my mobile phone, but i paid yesterday with my phone externally, and it still works.

Thus would be interesting, if you have seen this behaviour on your side, or got any remarks from other developpers/customers.
(I guess paying on the same solo device multiple time in a short period of time is probably not a normal Use Case)

[VitorVRS]

Thus would be interesting, if you have seen this behaviour on your side, or got any remarks from other developpers/customers.

I've never seen this behavior with Gpay. But wallets can arbitraly reject repeated taps in a short time window, repeated payments to the same terminal, same amount or similar amounts. The reason for that is to reduce risks.