We had a need to print multiple pick tickets using a suitelet (for selection) on separate pages.  There is no way to consolidate pick ticket PDF output, so the solution here uses HTML documents.

The selection array contains rows with the pick ticket ID and number (unused) and the response object is passed to the suitelet.

     var params = new Array();      params.formnumber = this.C.FORMS.IA_PICKING_TICKET;//custom pick ticket form      var html = '', t, idx;      for(var i = 0; i < selected.length; i++){//for each pick ticket          t = nlapiPrintRecord('PICKINGTICKET', selected[i][0], 'HTML', params).getValue();//get the HTML doc          if(0 < i){//strip the head and opening body elements for tickets 2-n              idx = t.indexOf('<body');              idx = t.indexOf('>', idx);              t = t.substring(idx + 1);          }          //strip the closing body element for all tickets          t = t.substring(0, t.indexOf('</body>'));          html += t;//add this pick ticket          if(i != selected.length - 1)//add a page break for tickets 1-(n-1)              html += "n<p style="page-break-before: always"> </p>";      }      html +=