dylancuure_26034

[mint yacht]

hi! it's highly unlikely it's to do with any API parameter or integration pattern I would think.
If you have an example PaymentIntent pi_xxx that declined I could have a quick look if I see anything unusual. But overall if you're concerned about auth rate I'd suggest opening a support ticket at https://support.stripe.com/?contact=true with multiple examples

[hearty mural]

Thanks for your reply
Here are 3 examples
pi_3OiEEwHt376aWl7W1Z9P6EDE
pi_3OgnbEHt376aWl7W1m7dyKMf
pi_3OgDWLHt376aWl7W0dnVVeqH

[mint yacht]

thanks! I don't see anything unusual on the API side. The payments fail with MSO3 which is a generic SEPA decline code.
As I say I'd suggest opening a support ticket for the concerns