testing_83560

[timid sandal]

Every payment method ID is unique. What kind of uniqueness are you referring here? Can you provide an example?

[inland beacon]

for example a user creates a setupintent with sepa_debit.He provide a valid iban number.
the user is given the option to setup another payment method for future use.He provides the same iban number .Is there a way to check if they are duplicate.

[timid sandal]

Yes! fingerprint can be used to check the uniqueness in such a case: https://stripe.com/docs/api/payment_methods/object#payment_method_object-sepa_debit-fingerprint

[inland beacon]

Same goes for other payment methods.
for example a user creates a setup intent using paypal using an account.How can I validate if he is using the same account for another setup.

[timid sandal]

If the IBAN number is the same, the fingerprint will be the same even though payment method IDs are different

Similarly for other payment methods

[inland beacon]

Some payment methods do not have fingerprint

[timid sandal]

Can you share example payment methods that don't have fingerprint?

[inland beacon]

Paypal

And cards have the same finger print even if the year or cv changes

ideal also does not have fingerprint

[timid sandal]

And cards have the same finger print even if the year or cv changes
This is expected. Same card number will have same fingerprint regardless the expiry or cvc

ideal also does not have fingerprint
If an iDEAL is saved, it will be saved as SEPA direct debit [0] which has fingerprint

Paypal
payer_id can be used: https://stripe.com/docs/api/payment_methods/object#payment_method_object-paypal-payer_id

[0] https://stripe.com/docs/payments/ideal/save-during-payment

[inland beacon]

so there is no unique identifier common for every payment method

[timid sandal]

In general, fingerprint can be used, but there can be exception like PayPal

[inland beacon]

ok