USPS - Error Detection Test Address Management 1 — Questions and Answers
Question 1: The Intelligent Mail Barcode (IMb) is composed of how many bars?
- 31
- 48
- 65 (Correct answer)
- 52
Correct answer: 65
The IMb uses 65 bars to encode up to 31 digits of routing and service information. The 65-bar count is the physical structure of the barcode symbol, while 31 digits represent the data payload.
Question 2: Delivery Point Validation (DPV) is used to:
- Track a mailpiece after it enters the postal stream
- Confirm that an address corresponds to an actual deliverable point in the USPS database (Correct answer)
- Convert rural route addresses to city-style street addresses
- Verify that a mailer's postage account balance is sufficient
Correct answer: Confirm that an address corresponds to an actual deliverable point in the USPS database
DPV checks each address against the USPS Master Delivery File to confirm it represents a real, deliverable location — not merely a correctly formatted one. An address can pass format checks yet still not exist.
Question 3: Under USPS Move Update standards, address lists must be updated within how many days before the mailing date?
- 30 days
- 60 days
- 95 days (Correct answer)
- 180 days
Correct answer: 95 days
USPS requires mailers to process their lists through an approved Move Update method — such as NCOA — within 95 days before the postage statement date to minimize UAA mail caused by outdated addresses.
Question 4: LACSLink is primarily designed to:
- Convert PO Box addresses to residential street addresses
- Link multiple addresses belonging to the same household
- Convert rural route and highway contract addresses to city-style street addresses (Correct answer)
- Validate suite and apartment numbers against building permit records
Correct answer: Convert rural route and highway contract addresses to city-style street addresses
LACSLink translates legacy rural route (e.g., RR 2 BOX 45) and highway contract addresses into modern street-style addresses, enabling accurate automated sorting and delivery.
Question 5: According to USPS addressing standards, a secondary address element (such as APT or STE) should appear:
- On a separate line directly above the city, state, and ZIP line
- At the beginning of the delivery address line, before the house number
- On the delivery address line, after the street name and number (Correct answer)
- On a line by itself between the street address line and the city line
Correct answer: On the delivery address line, after the street name and number
USPS standards place the secondary designator and its identifier at the end of the delivery address line (e.g., 123 MAIN ST APT 4B). Only when the line is too long should it move to the line immediately above the delivery address.
Question 6: When CASS-certified software returns a 'non-deliverable' result for an address, this most commonly means:
- The ZIP code contains more than nine digits
- The city name was entered in mixed case rather than uppercase
- The address does not match any record in the USPS Delivery Point database (Correct answer)
- The mailer omitted a return address from the mailpiece
Correct answer: The address does not match any record in the USPS Delivery Point database
A non-deliverable result indicates the address — regardless of how it is formatted — does not exist as a recognized delivery point in the USPS database, making successful delivery unlikely.
USPS - Error Detection Test Address Management 1
The Intelligent Mail Barcode (IMb) is composed of how many bars?