Using Single Sign On (SSO), you can redirect a signed in members from a CRM member portal to the SynXis Booking Engine while retaining the signed in state. Consequently, member-only products are immediately available for selection. Usage Notes: 1. The CRM must send the access_token value from the API response to the client (browser) as part of transitioning the user to SBE. It is the presence of this token that controls whether the user is treated as logged in to SBE or not. 2. The access_token value generated from this call must not be shared with other clients. 3.