Product Id will take on the ObservationId value if not specified by the user.

    throw  IException(IException::User, msg, _FILEINFO_);

  }

  if ( ui.WasEntered("PRODUCTID") ) {

  // Add the ProductId keyword for translation. If a product id is not specified

  // by the user, set it to the Observation Id.

  // This is added before the translation instead of adding it to the exported xml

  // because of the ease of editing pvl vs xml.

  PvlGroup &archiveGroup = label->findObject("IsisCube").findGroup("Archive");

    try {

      PvlKeyword &prodId = archiveGroup.findKeyword("ProductId");

      prodId.setValue( ui.GetString("PRODUCTID") );

    }

    catch (IException &e) {

      archiveGroup.addKeyword( PvlKeyword("ProductId", ui.GetString("PRODUCTID")) );

  PvlKeyword productId = PvlKeyword("ProductId");

  if ( ui.WasEntered("PRODUCTID") ) {

    productId.setValue( ui.GetString("PRODUCTID") );

  }

  else {

    QString observationId = archiveGroup.findKeyword("ObservationId").QString();

    productId.setValue(observationId);

  }

  archiveGroup.addKeyword(productId);

  /*

  * Add additional pds label data here