Thanks for your interest in Visa Checkout and for asking questions about this API in the Visa community forum! I like the fact that you want to learn more about this API and I'd like to provide you with a direct connection that can help answer your questions specific to Visa Checkout.
We've got an expert team for Visa Checkout APIs that will walk you through any questions that you may have. Can you please submit this inquiry to Developer@visa.com?
Someone will work with you soon after and please feel free to submit another community forum post at any time.