Complete checkout with stripe: tokenized payment?

Hello, developing a website with svelte and shopify API storefront, I am trying to complete a payment on shopifty by tokenizing a Stripe credit card but I am having problems with the last step, all this because I need to do it natively on my site, I am following some steps that the documentation that I attach below says.

https://shopify.dev/docs/api/storefront/2023-10/mutations/checkoutcompletewithtokenizedpaymentv3

https://shopify.dev/docs/custom-storefronts/building-with-the-storefront-api/checkout/create#step-5-complete-the-checkout

error: ‘Parameter Missing or Invalid’

Additionals:

paymentData was taken from a stripe test card, in the same way i have generated the token with the respective stripe function but the result remains the same.

when i go to the payment link generated by Shopify, all the details are filled except the credit card details.