Getting Started All Zoho Desk APIs require these two mandatory fields in the header.

Getting Started All Zoho Desk APIs require these two mandatory fields in the header.

Hey,
according to API Dokumentation, All Zoho Desk APIs require these two mandatory fields in the header.
Authorization - Authentication request token
orgId -ID of the organization to access. All API endpoints except /organizations mandatorily require the orgId.

 Orgid: 200844*****    where I can get Authentication request token please??