Stripe Connect errorStripe Connect: account_invalid

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Why Stripe rejects the account, and the fix

1. 01

   The header holds the wrong kind of ID

   “The account ID provided as a value for the Stripe-Account header is invalid.” Stripe, Error codes (account_invalid)

   A customer ID (cus_), a user ID from the app’s database or a platform account ID ends up in the header. Store the connected account ID from onboarding and pass that.

   const paymentIntent = await stripe.paymentIntents.create(
     { amount: 2000, currency: 'usd' },
     { stripeAccount: seller.stripeAccountId }, // acct_...
   );

2. 02

   The value is empty or undefined

   “To make server-side API calls for connected accounts, use the Stripe-Account header with the Account ID, which begins with the prefix acct_.” Stripe, Make API calls for connected accounts

   A missing database field can reach the request as an empty string, or as the text “undefined” when the ID is built into a string. Check that the value starts with acct_ before the call, and skip the stripeAccount option for requests on the platform account itself.

3. 03

   Test and live data are mixed

   A connected account created in test mode only exists in test mode. Live keys with a test account ID, or the reverse, fail; keep account IDs per mode.

4. 04

   The client sets the wrong account

   Also check: Stripe.js takes the connected account in loadStripe. Pass the same acct_ ID the server used, or confirming a PaymentIntent created on the connected account fails.

   const stripePromise = loadStripe(publishableKey, {
     stripeAccount: connectedAccountId,
   });

Checked against the vendor’s docs on November 9, 2026: Stripe docs: Error codes; Stripe docs: Make API calls for connected accounts.

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Related: Stripe Connect onboarding incomplete · Stripe No such customer (test mode) · Stripe No such PaymentMethod · Stripe customer_tax_location_invalid