This counts Access-Reject-type responses attributed to this accounting server entry, again a counter name inherited from the authentication object set. As with the AccessAccepts counter in this table, a nonzero value here on what's meant to be a pure accounting server is a specific signal to check whether this accounting endpoint is actually a dual-purpose RADIUS server also handling authentication for these sessions. For example, an admin seeing this counter increment on an accounting-only server row should cross-reference the corresponding authentication table entry for the same IP to see if it's the same physical RADIUS box configured twice.