CASS Results Codes

The CASS coding system returns four-character codes that indicate status and errors detected by the CASS process. Returned results may contain multiple codes: AC03, AC11, AS01, AS15. Instead of looking at multiple fields to determine the status or error of a record, you can simply look at the output of the CASS Results field.

A CASS Result Code of AS01 or AS02 the record is accurate enough to be used for standardization, matching, and geocoding. AS01 coded records are addresses that are fully valid and deliverable for the purpose of mailing, but each address must have AS01 or AS02 to be considered a valid record.

When AS01 is accompanied by other codes, the address is still considered valid and deliverable as long as none of the accompanying codes include:

AS02, AS09, and AS18
AE** codes
AC** codes

AS** - status result codes

Code	US Only	Meaning	Details
AS01		Address matched to postal database	Street Address is valid and deliverable. Check AE08 and AE09 for full deliverability.
AS02		Street address match	Address street matched to USPS database but a suite was missing or invalid.
AS03		Non-USPS address	The input represents a real physical address but is not in the USPS database. It may be deliverable by other carriers (UPS, FedEx, etc.)
AS09		Foreign postal code detected	Postal Code from a non-supported foreign country detected. A US ZIP Code or Canadian Postal Code can also return this error if the US or Canadian data files are not initialized.
AS10	Y	Address matched to CMRA	Address belongs to a Commercial Mail Receiving Agency (CMRA) like The UPS Store®.
AS13	Y	Address has been updated by LACSLink	Address has been converted by LACSLink® from a rural-style address to a city-style address.
AS14	Y	Suite appended by SuiteLink	A suite was appended by Suite ™ using the address and company name.
AS15	Y	Suite appended by AddressPlus	A suite was appended by AddressPlus using the address and last name.
AS16		Address is vacant	Address has been unoccupied for 90 days or more.
AS17		Alternate delivery	Address does not receive mail.
AS18	Y	DPV error	Reach out to support for assistance.
AS20	Y	This address is deliverable by USPS only	Alternate carriers such as UPS and Fed Ex do not deliver to this address.
AS22	Y	No suggestions	No suggested alternatives were found.
AS23		Extraneous information found	Information found in input street address that was not used for verification.
AS24	Y	USPS door not accessible	Address identified by the USPS where carriers cannot physically access a building or door for mail delivery.

AE** - error result codes

AE** result codes indicate there is something wrong with the address that cannot be corrected automatically.

Code	US Only	Meaning	Details
AE01		Zip code error	The Postal Code does not exist and could not be determined by the city/municipality and state/province.
AE02		Unknown street error	An exact street name match could not be found and phonetically matching the street name resulted in either no matches or matches to more than one street name.
AE03		Component mismatch error	Either the directional or the suffix field did not match the post office database, or there was more than one choice for correcting the address.
AE04		Non-deliverable address error	The physical location exists but there are no homes on this street. One reason might be railroad tracks or rivers running alongside this street, as they would prevent construction of homes in this location.
AE05		Multiple match error	Address matched to multiple records. More than one record matches the address and there is not enough information available in the input address to break the tie between multiple records.
AE06	Y	Early warning system error	This address has been identified in the Early Warning System (EWS) data file and should be included in the next postal database update.
AE07		Missing minimum address input error	Minimum required input of address/city/state or address/zip not found.
AE08		Suite range invalid error	The input street address was found but the input suite number was not valid.
AE09		Suite range missing error	The input street address was found but a required suite number is missing.
AE10		Primary range invalid error	The street number in the input address was not valid.
AE11		Primary range missing error	The street number in the input address was missing.
AE12	Y	PO, HC, or RR box number invalid error	The input address PO, RR or HC number was invalid.
AE13	Y	PO, HC, or RR box number missing error	The input address is missing a PO, RR, or HC Box number.
AE14	Y	CMRA secondary missing error	Address Matched to a CMRA Address but the secondary (Private mailbox number) is missing.
AE15		Demo mode	Demo mode only validates Nevada addresses.
AE16		Expired database	The database has expired. Please update with a fresh database.
AE17		Suite range extraneous error	A suite number was entered but no suite information found for primary address.
AE19	Y	Find suggestion time-out	Time allotted to the Find Suggestion function was exceeded.
AE20	Y	Suggestions disabled	The SetCASSEnable function must be set to false and the DPV data path must be set to use FindSuggestion.

AC** - change result codes

AC** result codes, known as change codes, indicate there is a component wrong, but the CASS tool can standardize it.

Code	Meaning	Details
AC01	ZIP code change	The five-digit ZIP Code™ was added or corrected based on the city and state names.
AC02	State change	The state name was corrected based on the combination of city name and ZIP Code.
AC03	City change	The city name was added or corrected based on the ZIP Code.
AC04	Base/alternate change	Some addresses have alternate names, often chosen by the owner or resident for clarity or prestige. This change code indicates that the address from the official, or “base,” record has been substituted for the alternate.
AC05	Alias change	An alias is a common abbreviation for a long street name, such as “MLK Blvd” for “Martin Luther King Blvd.” This change code indicates that the full street name has been substituted for the alias.
AC06	Address1/Address2 swap	The value passed to SetAddress could not be verified, but SetAddress2 was used for verification. The value passed to the SetAddress function will be returned by the GetAddress2 function.
AC07	Address1/Company swap	A company name was detected in address line 1 and moved to the GetCompany function.
AC08	Plus4 change	A non-empty Plus4 was changed.
AC09	Urbanization change	The Urbanization was changed.
AC10	Street name change	The street name was changed due to a spelling correction.
AC11	Suffix change	The street name suffix was corrected, such as from “St” to “Rd.”
AC12	Street directional change	The street pre-directional or post-directional was corrected, such as from “N” to “NW.”
AC13	Suite name change	The unit type designator for the secondary address, such as from “STE” to “APT,” was changed or appended.
AC14	Suite range change	The secondary unit number was changed or appended.