Printing copy/original (Netsuite)

how could I print original document when printing first time, and a copy whenever I print after the first time?

When printing a document, a UserEvent is triggered.

You can store a timestamp when it's first printed (or a simple checkbox) on the document.

You can either print the original document or the copy depending on the timestamp/checkbox.

/**
 *@NApiVersion 2.x
 *@NScriptType UserEventScript
*/
define(['N/record'], function(record) {

  function beforeLoad(context) {
    var UserEventType = context.UserEventType;
    var contextType = context.type;
    var newRecord = context.newRecord;

    if (contextType == UserEventType.PRINT) {
      var fieldId = 'custrecord_is_printed' // fieldId of your custom field / checkbox (or use a datetimestamp)

      var isPrinted = newRecord.getValue({ fieldId: fieldId })
      if (!isPrinted) {
        var myRecord = record.load({ type: newRecord.type, id: newRecord.id }) // in the beforeLoad, editing the newRecord is not allowed, so you need to load the record first, edit and save.
        myRecord.setValue({ fieldId: fieldId, value: true })
        myRecord.save()
      }
    }
  }

  return {
      beforeLoad: beforeLoad,
  }

});

in your advanced html template use a condition like

<#if record.custrecord_is_printed>
  <p>COPY</p>
<#else>
  <p>ORIGINAL</p>
</#if>