What is an "Operator of an information system using an application programming interface"?

Question

IT terminology

Hello. When registering for api fssp, they are asked to indicate the
name of the operator of the information system using the application programming interface

https://api-ip.fssprus.ru/register

Answer 1

API - application programming interface - application programming interface, application programming interface.
In a crooked translation - an application programming interface.

Answer 2

The name of the operator of the information system using the application programming interface

The name of the company using the API.