An alarm for RTO missed? I never saw alarms like that in vDP.
Also, as you probably now, vDP is deprecated and for this version even more!
No, RTO missed alarm is for vSphere replication.
VDP will have reports sent out on a daily basis (if configured) that says what is successful and what is not.
But it is not equipped enough for SLA missed alerts.
You would need to possibly consider another solution for this + considering VDP is out of the window.