ZIP+4 CASS Certification

                        Description

                        Coding Accuracy Support System CASS is a certification system used by the United
                        States Postal Service (USPS) to ensure the quality of ZIP+4 coding systems.
                        Processing a mailing list through a CASS certified ZIP+4 system (CASS certifying a
                        mailing list) is required to receive USPS automation discounts. CASS certification of
                        mailing list is required six months prior to the mail date on all automated mailings.
                        Certification of carrier routes is required 90 days prior to the mail date on all carrier
                        route sorted mail. ZIP code verification (either manual or CASS certified) is required
                        once per year on all nonautomated, discounted mailings.

                        ZIP+4 processing can standardize address information; correct city, state and/or ZIP
                        Code information; append +4 codes, characters required for Delivery Point Barcode
                        (DPBC), carrier route codes, and Line of Travel (LOT) codes. ZIP+4 Call also can
                        help identify problem addresses on your files. Some addresses on your files will not
                        be +4 coded because they could not be matched to the ZIP+4 database. There are
                        several reasons that an address cannot be +4 coded; such as misspelled, incorrect,
                        or missing information (see Optional ZIP+4 Error Codes for a more complete
                        listing). Addresses that cannot be matched to the ZIP+4 file will not be +4 coded,
                        will not have DPBC information appended, and cannot be standardized.
 

                        ZIP+4 coding and address standardization may also help in identifying additional
                        duplicates on your files -- duplicate addresses that may have been missed and
                        mailed. Please let us know if you would like more information on our Duplicate
                        Elimination service.
 

                        Optional ZIP+4 Error Codes

                        Error codes can be appended to your file to help identify problem addresses.
                        Problem addresses are identified as those addresses that are not codable (address
                        was not matched to the ZIP+4 database, therefore +4 code, carrier route code, etc.
                        could not be appended). These addresses can be pulled from your list, reviewed
                        manually for corrections, etc. ZIP+4 Error Codes will provide you with the following
                        types of information:

                              A small number of addresses are labeled as "Undeliverable" by the USPS in
                              the ZIP+4 file. These addresses will not be codable.
                              Duplicate Street or Firm. If more than one possible match exists on the
                              ZIP+4 files, a match cannot be made and the record will not be coded.
                              No City, State, and/or ZIP Code. One or more of these elements could not be
                              found in ZIP+4 processing or could not be parsed for matching purposes.
                              No Street or Firm Matched. Street name or Firm name information could not
                              be found in ZIP+4 processing or could not be parsed for matching purposes.
                              Missing Suffixes/Directionals. Missing or incorrect street suffixes and
                              directionals can cause an address to become non-codable. Missing
                              information can create more than one possible match to the ZIP+4 file.
 
 
 

                        Other errors include: Too Many Address Lines, Address Line Not Found, Last Line of
                        Address Not Found (City, State, and ZIP Code combination was not found and could
                        not be corrected), and Foreign Address.