ZABBIX can be configured to send messages to OpenView server. The following steps must be performed:
Define new media.
The media will execute a script which will send required information to OpenView.
Define new user.
The user has to be linked with the media.
Configure actions to send all (or selected) trigger status changes to the user.
Write media script.
The script will have the following logic. If trigger is ON, then execute OpenView command opcmsg -id application=<application> msg_grp=<msg_grp> object=<object> msg_text=<text>. The command will return unique message ID which has to be stored somewhere, preferrably in a new table of ZABBIX database. If trigger is OFF then opcmack <message id> has to be executed with message ID retrieved from the database.
Refer to OpenView official documentation for more details about opcmsg and opcmack. The media script is not given here.