insufficient capabilities

oracle linux 8.5

root@ov ~]# vi /usr/lib/systemd/system/[email protected]

CapabilityBoundingSet=CAP_IPC_LOCK CAP_NET_ADMIN CAP_NET_BIND_SERVICE CAP_NET_RAW CAP_SETGID CAP_SETUID CAP_SYS_CHROOT CAP_DAC_OVERRIDE CAP_AUDIT_WRITE** CAP_DAC_READ_SEARCH CAP_AUDIT_READ**

openvpn-server@ systemd unit has insufficient capabilities

Can't get pam authentication to work

openvpn-server@ systemd unit has insufficient capabilities

How to find out what linux capabilities a process requires to work?