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display erros 

  for i in 1..p_messages_tbl.COUNT loop
    logger.log('message:' || i, l_scope);
    apex_error.add_error(
        p_message           => p_messages_tbl(i).message_text
      , p_display_location  => p_display_location
    );
  end loop;
  

apex_error.get_error_count = 0