Invoice or Receipt in Checkout

Question

I have an online eshop developed with Magento 2.1.7 and I have a problem in checkout.

I want my customers to have choice between casual receipt and invoice.

I am not intrested to heve extra fields in in Address Settings Form.

The only one that I want is to have a checkbox or an multiple choice module, in which the customer will say its decission and of cource it will be saved in a way in order to be visible from employees.

Any idea?

Answer 1

you can use extension_attributes on checkout page you can add radio with invoice/receipt after place order you can save data like in: link