./include/triggers.inc.php: error(_s('No trigger with triggerid "%1$s".', $triggerid));
./include/hosts.inc.php: error(_s('No host groups with groupid "%s".', $groupid));
./include/hosts.inc.php: error(_s('No host with hostid "%s".', $hostid));
./include/hosts.inc.php: error(_s('No application with ID "%1$s".', $applicationid));
./include/items.inc.php: error(_s('No item with itemid="%1$s".', $itemid));
./include/items.inc.php: error(_s('No item with itemid "%1$s".', $itemid));
./include/graphs.inc.php: error(_s('No graph item with graphid "%s".', $graphid));

a) we should use either ID or <entity>id, not both.
b) notice "with itemid " and "with itemid="