View the list of Sample Business Letters Notice of Error in Shipment and Request for Return Authorization Disclaimer: Be aware that some of these sample letters have legal, financial, or other implications. If you are not sure about the use of any letter, consult with an appropriate professional first. Notice of Error in Shipment and Request for Return Authorization Dear This is to acknowledge the receipt of the above referenced order and to inform you that there is an error in the shipment. The merchandise I ordered was (specify) , while the merchandise I received is (specify) . Upon receiving your instructions for the return of goods, I will send same to you. I would like to receive the correct merchandise as quickly as possible and will appreciate your expeditious handling of this matter.