On accessing files on the shadow volume, the "EACCESS (Permission denied)" error is displayed. This is because the ACLs (Inherited Rights Filter (IRF) and Trustees) on the DST shadow volume is not in sync with the primary volume.
To resolve this issue, use the dst_verify_resync_trustee.py utility to verify and sync the ACLs from the DST primary volume to secondary volume. For more information on this utility, see Section A.8, Verifying and Syncing ACLs (Inherited Rights Filter (IRF) and Trustees) from DST Primary Volume to Shadow Volume.