Table of Contents Address Change Service: An Intelligent Solution . 1 Introduction. 1 Meeting Mailers’ Needs . 1 Benefits of ACS . 2 What is OneCode ACS? . 2 What is the Intelligent Mail Barcode? . 4 Administration. 4 Disclaimer . 4 How Does OneCode ACS Work? . 5 Move-Related and Non-Move-Related Notifications . 6 COA Coverage . 6 Features of OneCode ACS . 6 Fulfillment File Media Option. 7 Computerized Forwarding System ZIP Coverage File . 7 Fees . 7 Billing . 7 Refunds . 8 Participation Requirements . 8 Intelligent Mail Barcode. 8 OneCode ACS Barcode Composition . 8 Barcode Identifier . 9 Service Type Identifier . 9 Mailer ID . 10 Serial Number (Unique Mailpiece Identifier) . 10 Routing Code . 10 ACS Notification Options . 10 ACS Mailpiece Endorsements. 10 First-Class Mail Ancillary Services . 11 Change Service Requested . 11 Address Service Requested . 12 Periodicals Notification Options . 13 Nixies for All Periodicals Notification Options . 14 Standard Mail Ancillary Services. 14 Change Service Requested . 14 Address Service Requested . 14 ACS Fulfillment Files. 15 Data Integrity . 15 May 2009 i OneCode ACS Technical Guide ACS Notification File . 15 ACS Shipping Notice File . 16 ACS Notification File Header Record . 17 ACS Notification File COA Record . 18 ACS Notification File Nixie Record . 20 Traditional ACS and OneCode ACS fulfillments combined . 20 ACS Fulfillment Record Fields (alphabetized by field names). 20 Fulfillment File Access. 30 Automated Downloading . 30 Manual Downloading . 31 Alternative Manual Download . 34 Accessing the Data . 37 Change of Address Processing . 39 Other Considerations . 42 Mailpiece Considerations . 44 Window Envelopes . 44 Address Labels and Preprinted Envelopes . 44 Exceptional Address Format Prohibited . 44 Characters, Font and Text Size for Return Address and Printed Endorsement . 44 Application Procedures . 44 Activation Process . 46 Tips on How to Improve OneCode ACS Service . 48 OneCode ACS Frequently Asked Questions . FAQ-1 Introduction. FAQ-1 Administration. FAQ-1 Disclaimer . FAQ-2 General Questions . FAQ-2 Intelligent Mail Barcode Questions . FAQ-4 Regulations and Cost . ..