Important!!! Business Process From Custom Web-Service (Cookie-Based / Anonymous)

Hi Team,

There is an Usecase where I have to call Business Process from web service. I have 2 types of service: cookie-based & anonymous service. I have tried both services to invoke BP but did not work?

could you guide me step-by-step on how to call business process in web-service.

Creatio: 8.3.1.xxx