We have a custom legacy MSCRM solution that runs on every version of MSCRM on-premise from 2013 through latest version and MSCRM online. It currently does not support the Unified Interface. The earliest we can update the system to work with the Unified Interface is late next year (Fall of 2021).
So, question is at what point in time will our system no longer work for our customers given inability to work in Unified Interface?
Thanks!