DHCP Server: Resources of this pool ran out - Only Static Entries configured

Logs show message "DHCP Server: Resources of this pool ran out. Client Info: cid type: cid value:" even if there is no dynamic DHCP Pool on that specific interface.

Two static IPs configured on interface X3 DHCP Server (Network | DHCP Server):
IP = 172.16.1.57 MAC = 00 0C 29 xx xx xx
IP = 172.16.1.66 MAC = 00 14 5E xx xx xx

No other Dynamic DHCP Pool are configured on X3.

The error shown is: DHCP Server: Resources of this pool ran out. Client Info: cid type: cid value: subnet are 1:0x9cb654xxxxxx:172.16.1.0

The error shown is related to a MAC Address (9C B6 54 xx xx xx) not listed in the static DHCP entries for X3 but a request from that MAC Address on the X3 arrives to the SonicWall.

That means that the SonicWall has scope count equal to 2 (2 static DHCP entries) so the DHCP server is active for the X3 but it has no IP addresses available on X3 so it shows the error: DHCP Server: Resources of this pool ran out. Client Info: cid type: cid value:subnet are 1:0x9cb654xxxxxx: 172.16.1.0

In order to fix this issue, you need to troubleshoot the host reported in the log message (i.e. 9C B6 54 xx xx xx) and make sure this host has a static IP assigned or DHCP disabled.