VoLTE Retain Drop Rate

Hi All,

I have one Nokia Cell that has high number of VoLTE drops and the counter that has the highest numbers is (EPC_EPS_BEAR_REL_REQ_N_QCI1; ranging between 700-3000 per day, while ERAB_REL_ENB_QCI1 and ERAB_REL_ENB_RNL_INA_QCI1 is ranging between 1-100 per day.

What can be the possible reason and troubleshooting for this cell?