Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 5-2.2 Error Calculation A detailed calculation of Delivery Point Errors can be found in 6-2.7.2.2." /> Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 5-2.2 Error Calculation A detailed calculation of Delivery Point Errors can be found in 6-2.7.2.2." />