sysObjectID.0 wrong type for item

When I use sysObjectID.0 as an item and select "text" as type of information the zabbix server logs:

... item [...:sysObjectID] became not supported: Value has unknown type 0x06

Any other type I can use?

I want to monitor SNMP:sysObjectID.0 to fill the TYPE fild of the inventory of that host.