CASS Postal Address Verification & Validation 2

Question 1

Which USPS file is primarily used by CASS-certified software to verify ZIP+4 codes for a given street address?

Accepted Answer

Address Management System (AMS) file

Answer

The Address Management System (AMS) file contains the authoritative ZIP+4 data that CASS-certified software queries to validate and assign ZIP+4 codes.

Question 2

What does a DPV 'Vacant' flag on an address indicate?

Accepted Answer

The address is deliverable but currently not receiving mail

Answer

A DPV Vacant flag means the address is a valid, deliverable point but USPS has flagged it as currently not receiving mail.

Question 3

When CASS software encounters a secondary address element (e.g., apartment number) that cannot be confirmed, what DPV return code is assigned?

Accepted Answer

S

Answer

DPV return code 'S' indicates the primary address matched but the secondary address (apartment/suite) could not be confirmed.

Question 4

Which CASS output field indicates whether a structure is a residential or business location?

Accepted Answer

Residential Delivery Indicator (RDI)

Answer

The Residential Delivery Indicator (RDI) is a CASS output field that classifies an address as residential or business/commercial.

Question 5

What is the maximum elapsed time between a CASS certification cycle's start date and the date a mailer must reprocess a mailing list to maintain currency?

Accepted Answer

180 days

Answer

USPS requires that address lists be processed through CASS-certified software within 180 days of the mailing date to qualify for automation discounts.

(CASS) Coding Accuracy Support System Certification Practice Test

(CASS) Coding Accuracy Support System Certification Practice Test

CASS Postal Address Verification & Validation 2