Experts;
Is there anyone there has best practises explanation on this subject ?
Huawei Drop cause reason?

L2CFG FAILURE
OTHER
IUB RL FAILURE INDICATION
SRB RESET
UU RB RECFG FAILURE
TIMER EXPIRED
UU PHY RECFG FAILURE
CELL ABNORMAL
CALL ADMISSION
PARA CHECK FAILURE
UU RB SETUP FAILURE
GTPU FAILURE
IUB RL SETUP FAILURE
UU RB RELEASE FAILURE
INVALID RAB PARAMETER