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var incidents = new GlideRecord('incident');
var subInc = incidents.addQuery('number', 'INC001020');
subInc.addOrCondition('number','INC001021');
subInc.addOrCondition('number','INC001022');
incidents.query();
 while (incidents.next()) {
    gs.info('---> number: ' + incidents.getValue('number'));
}
Use of addOrCondition in GlideRecord with Example ServiceNow
Working Code Asked question September 25, 2023