Is it possible to retrieve information about Invoice payment settings from the 'Account and Settings -> Sales' section through the QuickBooks API?

Let me route you to the best support to assist you with this QuickBooks Online API concern.

I suggest reaching out to QuickBooks API. They'll be able to provide insights and guide you through retrieving information about invoice payments. Let me also share this article for future reference in knowing which apps are supported by QuickBooks: Apps that work with QuickBooks Online.

If you're referring to something else, please add your details to this thread and I'll get back to you. Have a good one.