Currently we see that an item is not supported but we have no idea why.
Specification is available at https://www.zabbix.org/wiki/Docs/specs/ZBXNEXT-2203
metrics return zeroes if the collector is unable to gather information
Add specific error message when Type of information is not correctly set
Print in agent log (DebugLevel=4) reason of ZBX_NOTSUPPORTED if number of key parameters is more than allowed, etc
Don't send "timeout while executing a shell script" as text item return value when UserParameter script timeout happens
item errors trimmed to 128 characters