Trigger prototype "<name>" must contain at least one item prototype message

[ssj]

i am running Zabbix 3.4.5 and want to generate disk alerts based on free space (in GB). I am using SNMP for data gathering and created one item prototype with following settings

name: {#SNMPVALUE}: Free space

type: Calculated

key: vfs.fs.free[storageFree.{#SNMPINDEX}]

formula: (last(vfs.fs.units.total[hrStorageSize.{#SNMPINDEX}])*last(vfs.fs.units[hrStorageAllocationUnits.{#SNMPINDEX}]))-(last(vfs.fs.units.used[hrStorageUsed.{#SNMPINDEX}])*last(vfs.fs.units[hrStorageAllocationUnits.{#SNMPINDEX}]))

type of information: numeric

units: B

Then I created a trigger prototype with following settings for one server and it works fine

{test-ad1:vfs.fs.free[storageFree.2].avg(1m)}<2147483648

However when I try to create another trigger prototype for another server like following and hit save it gives the "Trigger prototype "<name>" must contain at least one item prototype" error message.

{test-ad2:vfs.fs.free[storageFree.2].avg(1m)}<2147483648

Any help to resolve this is highly appreciated

[Noobz]

Sorry to resurrect this - I just created a new post for this exact issue (different trigger obviously but exact same issue). Did you resolve this?