CASS DPV & ZIP+4 Processing 4 — Questions and Answers
Question 1: Which scenario would most likely produce a DPV confirmation indicator of 'N' (not confirmed)?
- A valid apartment number in a confirmed high-rise building
- A street name that does not exist in any USPS delivery point record (Correct answer)
- A PO Box with a secondary designator missing
- A residential address with a correctly formatted suite number
Correct answer: A street name that does not exist in any USPS delivery point record
A DPV result of 'N' occurs when the primary number cannot be matched to any delivery point record, typically because the street, range, or address simply does not exist in USPS data.
Question 2: During CASS processing, how is an address typically handled when the input city name is incorrect but the ZIP Code is valid and the street data matches?
- The record is rejected entirely and cannot receive a ZIP+4 code
- The ZIP Code and street data drive the match, and the city name is standardized to the USPS preferred name (Correct answer)
- The city name takes precedence over the ZIP Code for routing purposes
- The record is flagged as undeliverable because the city is wrong
Correct answer: The ZIP Code and street data drive the match, and the city name is standardized to the USPS preferred name
CASS-certified software uses the ZIP Code and street-level data as primary matching keys; a mismatched city name is corrected to the USPS-preferred city name for the matched ZIP Code.
Question 3: What does the DPV footnote 'M1' indicate about the input address?
- Multiple records were returned and could not be resolved to a single match
- The primary address number is missing from the input record (Correct answer)
- The address matched a military APO or FPO ZIP Code
- The address has been flagged for manual USPS review
Correct answer: The primary address number is missing from the input record
Footnote M1 is returned when the input address is missing the primary number (house or building number), making it impossible to confirm delivery point status.
Question 4: When DPV processing returns footnote 'R1' indicating a CMRA match, what additional element is typically required in the address for proper mail delivery?
- A PMB (Private Mailbox) number assigned by the CMRA (Correct answer)
- A carrier route code appended to the ZIP+4
- A LACSLink conversion identifier
- A SuiteLink-confirmed secondary floor number
Correct answer: A PMB (Private Mailbox) number assigned by the CMRA
USPS regulations require that mail addressed to a CMRA include a PMB (Private Mailbox) number so the carrier and the agency can correctly route the piece to the individual renter.
Question 5: What condition does DPV footnote 'CC' describe?
- The address is in a commercial carrier-contracted zone
- Both primary and secondary numbers are present in the input, but only the primary number could be confirmed (Correct answer)
- The address underwent a city-style conversion through LACSLink
- The carrier count for the assigned route has been exceeded
Correct answer: Both primary and secondary numbers are present in the input, but only the primary number could be confirmed
Footnote CC indicates the input included both a primary and secondary number, the primary was matched successfully, but the secondary number could not be confirmed in the DPV database.
Question 6: Which condition triggers the DPV footnote 'P1' to be returned?
- A PO Box, Rural Route, or Highway Contract Box address is missing a required secondary number (Correct answer)
- The primary number is beyond the valid high-range for the street segment
- The address contains non-standard punctuation that prevented matching
- The delivery point falls within a gated private development
Correct answer: A PO Box, Rural Route, or Highway Contract Box address is missing a required secondary number
Footnote P1 is assigned when a PO Box, Rural Route, or Highway Contract Box record is present but a required secondary box number is missing from the input.
Question 7: In DPV processing, a 'false positive' confirmation refers to which situation?
- A deliverable address that the software incorrectly marks as undeliverable
- An address that returns a confirmed DPV match but the address is actually not deliverable by the carrier (Correct answer)
- A ZIP+4 code assigned to an address range that contains no active delivery points
- A match returned when no input address fields were populated
Correct answer: An address that returns a confirmed DPV match but the address is actually not deliverable by the carrier
A false positive occurs when DPV confirms an address as deliverable because it exists in the database, but in practice the carrier cannot deliver to it—e.g., a vacant lot or demolished building still in the USPS file.
CASS DPV & ZIP+4 Processing 4
Which scenario would most likely produce a DPV confirmation indicator of 'N' (not confirmed)?