Short answer
Show a message that the payment didn’t go through and offer a retry with the same PaymentIntent. If it fails a second time, suggest another card. On the server, reuse an idempotency key only when you repeat the same request after a timeout, and use a new key for a new attempt. For subscriptions, Smart Retries or your retry schedule will try the renewal again.
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What processing_error means, and what to do
01
The processing failed, not the card
“An error occurred while processing the card. Try again later or with a different payment method.” Stripe, Error codes (processing_error)
Stripe doesn’t say where the processing failed. It advises trying again, and the card may work on a second attempt. The code shows up on the error, in the PaymentIntent’s last_payment_error, and in the payment_intent.payment_failed webhook.
02
Let the customer retry once
“Ask the customer to attempt the payment again. If it still can’t be processed, the customer needs to contact their card issuer.” Stripe, Decline codes (processing_error)
Keep the PaymentIntent and confirm it again. If the second try fails too, stop and offer another card instead of retrying in a loop.
if (error?.code === 'processing_error' || error?.decline_code === 'processing_error') { showMessage('The payment didn’t go through. Try again, or use another card.'); }03
Server retries need an idempotency key
An idempotency key stops one attempt from being sent twice, for example after a network timeout. Stripe replays the first result for a key, failures included, so a deliberate retry after processing_error needs a new attempt: confirm the PaymentIntent again, or use a new key.
// server side, saved card, customer not present await stripe.paymentIntents.create( { amount, currency: 'usd', customer: customerId, payment_method: pmId, off_session: true, confirm: true }, { idempotencyKey: `order-${orderId}-attempt-${attempt}` }, );04
Many payments fail at once
A burst of processing errors across different cards points to a wider problem. Check the Stripe status page and your Dashboard before changing code.
Checked against the vendor’s docs on : Stripe docs: Decline codes; Stripe docs: Error codes.
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Related: Stripe idempotency key errors · Stripe expired_card · Stripe do_not_honor decline · Stripe card_not_supported