If you would like to acknowledge the receipt of your final settlement, here is a simple template you can use to write an acknowledgement letter for a final settlement.
We, at [company name], hereby acknowledge that we have received a total of [amount/quantity] as the final settlement on our offer regarding [offer details/consignment number]. The complete consignment was received by us from [other party names] on [date]. We agree with the above-mentioned amount/quantity and accept it as the settlement.
Thank you for your cooperation.