We setup a beacon recently in FNMP 9.2.3, when tried to schedule a discovery on the new beacon, see the following error in the listen.log on the Beacon server

Failed to look up security group <AD domain\ AD group1> : error 0x80070534.
Failed to look up security group <AD domain\ AD group2> : error 0x80070534.
Failed to negotiate authentication on connection from server <Core Inventory server>:57012
.

Note: both the Beacon and Core FNMP servers are in the same AD domain.

Has anyone come across this ?