[zabbix 1.6] item.last() value not found
I have an item provided periodically by zabbix_trapper which is working properly but, when I try to use it in an trigger expression with item.last() value, zabbix_server returns an error in log file telling me that it can`t found last value for the item.
Furthermore, I confirm, after look in MySQL table (zabbix.items), that item has not last value, nevertheless in front-end I can see all its values normally.
Why?
Furthermore, I confirm, after look in MySQL table (zabbix.items), that item has not last value, nevertheless in front-end I can see all its values normally.
Why?