Above shows a table of maximum NAT policies, but that doesn't seem to be what the log is referencing.
I could not find any reference to a 'maximum dynamic NAT count'. An explanation from Sonicwall about if this count is referencing some hidden value, or if its referencing the maximum connections count of a device would help.
Answers
Given the limited information provided, it seems these are SNMP logs you are showing us.
The PDF linked above has a reference to the entry you are questioning.
Above shows a table of maximum NAT policies, but that doesn't seem to be what the log is referencing.
I could not find any reference to a 'maximum dynamic NAT count'. An explanation from Sonicwall about if this count is referencing some hidden value, or if its referencing the maximum connections count of a device would help.