データテーブルに値が存在するか確認→書き出ししたい

Web上から読み込んだデータテーブル[dtWebData]の番号があります。
image

上記の番号を一行ずつ、以下のExcelに保存されたデータテーブル[dtExcelData]に存在するか確認して、存在しなければ最終行の下に書き出す、というワークフローを作成したいです。
image

この場合、
・003、004、005はExcel上に存在するため、記載しない
・005、006はExcel上に存在しないため、Excelに書き出す
という動作を実現したいです↓↓
image

よろしくお願い致します。

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