Improve ENDC drop

My question for Ericsson 5G Experts.
Does we have any optimization mechanism, timer, parameter, system constant, etc to improve ENDC drop?

In my Ericsson system, most all drops are accounted on counter AbnormalMeNBAct. (pmEndcRelUeAbnormalMenbAct).

Neglect counter AbnormalMenb now because its here 21.1 release.
If you expert then you should know why to neglect him?