Issue with Order Creation via Shopify API status 200 OK

Hello, I want to create an order using the Shopify API, but I’m getting a 200 OK status instead of a 201 order created. And the order is not being created (see image below, I’m using Postman). Is there an error in your API documentation? I need this functionality to create an express checkout on my product page (name, phone number, city). Thank you for your assistance.