When extracting fields from events in Splunk, typically each field has a single value. For instance, in a firewall packet event there is a src_ip, src_port, dest_ip, dest_port, action, etc., each with a single value. But there are occasionally fields which have more than one value. One common field type that often has multiple values is an e-mail address field, such as from or to. Splunk deals with these values by allowing fields to hold multiple values, which it refers to as simply a “multivalue fiel... read more.