The E-Ticketing service providers assigned by IRCTC agent registration for reserved rail e-ticketing service will be referred to as IRCTC principal service providers (PSPs). No API integration will take place as website agents book the packages directly from the website through the same login ID and password issued for e-ticketing. https://medium.com/@VapronDigital/irctc-agent-registration-can-grow-your-business-bbb85ae3dea1