In order to comply with federal law 54 “On the mandatory use of online cash registers for online stores”, a merchant must conclude an agreement with a fiscal data operator (OFD), which stores, processes, transfers them to the tax office and generates a check. If this is not the case, then you can connect one of those with which Sber already has integration - ATOL, KOMTET Cashier, OFD.ru , Digital Cashier, etc. It is better to study the nuances of different OFDs in advance. The request to the OFD comes after the client has made the payment - either the gateway does this if you use the OFD from.
Sober, or the store itself must do this if it B2C Email List has its own connected. All these requirements are checked when connecting the gateway to the production environment. When you are ready to go out, a representative of the acquiring bank will go to the test site and either ask to fix something or connect the production. How will we integrate? Possible ways to integrate by increasing the level of automation: invoicing through LC Sberbank. You can do without your own site, just go in, get a link and send it to the client. If we have three or four sales a day, that's fine.
Payment button, Sberbank has it. In fact, this is a script with a token, the minus of this approach is that a clever pest can tweak the script in the browser and change, for example, the amount of the payment. This is an unsafe story, it is better not to use it. ready plugin for CMS. Sberbank has the ability to connect such a payment method out of the box. Not the most advanced, but it works. API. You can use WSDL (SOAP) or REST, it seems to us more convenient than REST, because it is simpler and more flexible, plus the data is transferred in JSON, not in XML.