Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 5-3.2 Error Calculation A detailed calculation of Nesting/Sortation errors can be found in 6-2.7.3.2," /> Publication 685 - Publication for Streamlined Mail Acceptance for Letters and Flats - Contents 5-3.2 Error Calculation A detailed calculation of Nesting/Sortation errors can be found in 6-2.7.3.2," />