The Generic BGP BackwardTransition traps (1.3.6.1.2.1.15.7.6.2 or 1.3.6.1.2.1.15.7 6 2) are not processed on Cisco Switches that have a CiscoBGP4_App application model associated with them in Spectrum.
Release : DX NetOps Spectrum 20.2. 21.2.x
Component : Spectrum Core / SpectroSERVER
Configure the device to send the cbgpPeer2BackwardTrans