Invoice Correction Letter An invoice correction letter is used to notify a client about an error that mistakenly made on their invoice and the corrected invoice is enclosed with this letter, seeking an apology for the mistake in the invoice. Mistakes can happen and mistakes happen at the time of sending an invoice to the client due to different reasons. It can be a human error or if any software is used, there may be some auto-generated mistake. The first principle to deal with such error is to acknowledge and admit your mistake with your client and should seriously and politely…