Barcode and Labeling Issues Flashcards
7 cards from real USPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Barcode and Labeling Issues flashcards as text
A bulk mailing tray label shows the 5-digit ZIP destination as '9021O' (the letter O instead of zero). What type of error is this?
Answer: An OCR-confusable character substitution that can cause misrouting of the entire tray
Substituting the letter 'O' for the digit '0' is a common OCR-confusable error that can route an entire tray of mail to the wrong facility.
A mailer's software generates a Delivery Point Barcode (DPBC) using an address that has not been CASS-certified. What is the likely consequence?
Answer: The DPBC may encode an incorrect or non-existent delivery point, causing misdelivery
Without CASS certification, addresses may contain errors that cause the generated barcode to encode an invalid or wrong delivery point.
A label on a First-Class package shows two different ZIP codes: one in the printed address block and a different one encoded in the barcode. Which takes precedence during automated processing?
Answer: The barcode takes precedence during automated sorting, potentially overriding the correct destination
Automated sorting equipment reads and acts on the barcode first, so a barcode encoding a wrong ZIP will route the piece incorrectly even if the printed address is correct.
A presort mailing uses red ink to print barcodes on white envelopes. Why would this cause processing problems?
Answer: USPS scanners use infrared light that cannot distinguish red ink from a white background, making the barcode unreadable
USPS barcode scanners use near-infrared illumination, and red ink reflects infrared similarly to white paper, rendering the barcode invisible to the scanner.
An envelope label lists the return address in the delivery address area and the delivery address in the return address area. What processing error will result?
Answer: Mail will be delivered or returned to the wrong party because automated systems use address position to determine routing
Automated systems use the position of address blocks to determine destination versus return routing, so swapped addresses cause delivery to the wrong recipient.
A mailer prints a 'MEDIA MAIL' endorsement on a package but the barcode encodes a Priority Mail service type code. What is the problem?
Answer: The service type code mismatch means the piece will be processed and charged as Priority Mail, contradicting the endorsement
The service type code within the barcode drives automated processing and billing, so a mismatch between the printed endorsement and the encoded service type causes incorrect handling and potential postage disputes.
A flat-size mailpiece passes through a barcode sorter but exits as unreadable. The barcode itself is intact, but it is printed on a metallic silver envelope. What is the cause?
Answer: Metallic surfaces reflect scanner light unpredictably, causing excessive noise that prevents reliable barcode reading
Metallic or highly reflective surfaces scatter the scanning laser beam, creating signal noise that prevents the scanner from reliably distinguishing bars from spaces.