KyleForza

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when they try to update their current subscription, they are not redirected to Stripe checkout, istead the payment fails with error 402.
Can you explain more how exactly your integration works here?

Subscription changes aren't done via Checkout, they're either directly via your API integration or using something like the Customer Portal for supported use cases.

Do you have an example of a failed update request I can see?

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sharing payment intent id
pi_3LiJ3PSCewhplICl13Pz1Amd

pi_3LicbvSCewhplICl1TYuAssa

[shut lava]

Thanks - taking a look

Ok, yes, you can see here that you're using payment_behavior: "error_if_incomplete" which leads to that 402 response when authentication is required.
https://dashboard.stripe.com/test/logs/req_8w78eqAWlQ0i0Z
You'll need to retry that payment with the customer on session to complete the payment, as described in the doc linked in the error:
https://stripe.com/docs/billing/subscriptions/overview#requires-action

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Let me take a look, can you hold and not archive this chat for 30mins?

[shut lava]

Sure, no problem