How to pay using payments API after creating checkout in case only paypal is enabled on store?

Topic summary

Vendor’s store has checkout enabled but Shopify Payments is disabled; only PayPal or other express checkout options are available and credit cards aren’t accepted. The team currently processes payments via the Shopify Payments API after creating a checkout and is unsure how to proceed under these constraints.

Shopify Payments API: used to take card payments through Shopify’s native processor. Express checkout (e.g., PayPal): offsite or accelerated flows that don’t use Shopify’s card processing.

Key question: how to complete payment via API when the store supports only PayPal/express checkout and not credit cards. No answers, decisions, or workarounds provided; the issue remains open.

Summarized with AI on January 3. AI used: gpt-5.

We have a vendor that has checkout enabled but Shopify payments disabled. We are using Shopify payment API to make payments, but in this case we’re stuck and confused how should we make payments while a store has only PayPal or any express checkout enabled that does not accept CC payments.