CASS Address Matching & Standardization 5 — Questions and Answers
Question 1: How does CASS software handle a street name spelled 'Saint Paul Ave' when the USPS database has 'St Paul Ave'?
- It rejects the address as unmatched
- It standardizes 'Saint' to 'St' and matches the address (Correct answer)
- It outputs 'Saint Paul Ave' as entered
- It flags 'Saint' as an unsupported word form
Correct answer: It standardizes 'Saint' to 'St' and matches the address
CASS software normalizes common word variants like 'Saint' to 'St' per USPS approved abbreviation tables before attempting a match.
Question 2: What is the significance of the 'walk sequence number' assigned during CASS processing?
- It ranks addresses by ZIP Code proximity for route optimization
- It indicates the physical order in which a carrier delivers mail on their route (Correct answer)
- It assigns priority codes for first-class versus standard mail
- It identifies the postal worker responsible for each delivery route
Correct answer: It indicates the physical order in which a carrier delivers mail on their route
The walk sequence number indicates the exact order in which a carrier delivers mail along their route, enabling mailers to pre-sort for walk sequence discounts.
Question 3: A mailer submits an address of '1600 Pennsylvania Ave NW, Washington DC 20500'. During DPV processing, what unique characteristic might this address have?
- It would be excluded from DPV processing as a government address
- It may be flagged with a 'No-Stat' indicator as it is a unique ZIP Code recipient (Correct answer)
- It requires a special military mail designation
- It would automatically receive a DPV confirmation of 'N'
Correct answer: It may be flagged with a 'No-Stat' indicator as it is a unique ZIP Code recipient
Certain high-profile or government addresses may carry No-Stat designations because standard delivery statistics are not tracked or the address has unique handling requirements.
Question 4: Which factor determines whether an address qualifies for the 5-digit presort rate versus the carrier route presort rate?
- The class of mail being sent
- Whether the address has been matched to carrier route level during CASS processing (Correct answer)
- The physical size and weight of the mailpiece
- Whether the mailer has a Business Reply Mail permit
Correct answer: Whether the address has been matched to carrier route level during CASS processing
To qualify for carrier route rates, addresses must be CASS-matched to the carrier route level and sorted into trays or bundles by carrier route.
Question 5: What is the primary purpose of the USPS 'eLOT' (Enhanced Line of Travel) data in address processing?
- To validate that apartment numbers are within a building's known range
- To assign ascending or descending sequence numbers for walk-sequence sorting (Correct answer)
- To verify city and state name combinations against ZIP Code data
- To identify businesses that accept bulk mail deliveries
Correct answer: To assign ascending or descending sequence numbers for walk-sequence sorting
eLOT provides ascending or descending sequence codes that enable mailers to sort addresses in the order a carrier walks their route for maximum walk-sequence discounts.
Question 6: When comparing two candidate address matches in CASS processing, which component mismatch is most likely to cause a match to be rejected?
- A difference in ZIP Code only
- A difference in street name with matching primary number (Correct answer)
- A difference in the city name when ZIP Code matches
- A difference in the secondary unit number
Correct answer: A difference in street name with matching primary number
A street name mismatch is a fundamental component error that overrides other matching factors, making a correct match highly unlikely even if the primary number is correct.
Question 7: Under CASS certification, what minimum match rate percentage must software achieve on the USPS test address file to receive certification?
- 90%
- 95%
- 98% (Correct answer)
- 99%
Correct answer: 98%
CASS certification requires software to correctly match and standardize at least 98% of addresses in the USPS-supplied test file while staying within acceptable false positive limits.
CASS Address Matching & Standardization 5
How does CASS software handle a street name spelled 'Saint Paul Ave' when the USPS database has 'St Paul Ave'?