piu数据是一个元素数组，它是一个in参数。不能将值赋给参数中的。声明一个局部变量来存储通道id，或者声明一个note\u msg%rowtype类型的局部变量，并用它来存储通道id。您没有提到note\u detail\u arr的声明是什么，所以我定义了一个rowtype类型的局部变量。例子：

procedure ins_note(pi_data IN note_detail_arr) 
is 
  l_note_msg_row note_msg%ROWTYPE;
BEGIN
  FOR i IN pi_data.first..pi_data.last LOOP
    l_note_msg_row.channel_id := pi_data(i).channel_id;
    IF
      pi_data(i).template_id IN (022, 019, 015, 017, 021, 001, 010, 016, 018, 020, 023 ) AND pi_data(i).channel_id IS NULL
    THEN
      l_note_msg_row.channel_id := 'XLS';
    END IF;

    INSERT INTO note_msg (
      template_id,
      channel_id
    ) VALUES (
      pi_data(i).template_id,
      l_note_msg_row.channel_id
    );

  END LOOP;
  -- you should not commit in your procedure. Instead only commit when your complete transaction is done from code that calls this proc.
  COMMIT;   
END ins_note;