Everything here is from the references shown below, with a few comments in an alternate color.
Displayed CAS and CA Messages
L Thrust Rev Unlock (U)
R Thrust Rev Unlock (U)
L-R Thrust Rev Unlock (U)
(1) Refer to 04-06-10, Engine Failure Below V1.
FADEC will command the affected engine to idle regardless of position of throttle.
Gulfstream GVII-G500 Airplane Flight Manual, Revision 4, August 29, 2019
Gulfstream GVII-G500 Production Aircraft Systems, Revision 3, July 15, 2019
Copyright 2019. Code 7700 LLC. All Rights Reserved.