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Identifying Data Entry Errors 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.

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  1. Two consecutive package records share identical sender information but different barcodes. Which step best verifies accuracy?

    Answer: Cross-reference barcodes against physical labels on each package

    Physically verifying barcodes against labels is the most reliable way to confirm whether the shared sender information is legitimate or a copy-paste error.

  2. A clerk enters a state as 'CA' for a package destined for Calgary, Canada. What error has occurred?

    Answer: Country-state confusion error

    Entering 'CA' — the US state code for California — for an address in Canada confuses a foreign city with a domestic state abbreviation.

  3. A data field for date of delivery shows '07/32/2026'. What error is present?

    Answer: Day value is impossible

    No month has 32 days, so '32' in the day position is an impossible value and indicates a data entry error.

  4. An operator copies a tracking number and accidentally adds an extra digit, creating a 23-digit code from a 22-digit original. This is a(n):

    Answer: Addition error

    Inserting an unintended extra digit increases the length of the field, which is classified as an addition error.

  5. A USPS employee checks a ZIP+4 code entered as '10001-1234' against the reference '10001-1243'. What type of error is present?

    Answer: Transposition in the +4 extension

    The last two digits of the +4 extension ('34' vs. '43') are transposed, reversing the correct order.

  6. Which of the following represents an error in a sender's address when compared to the reference '88 Park Blvd, Suite 400, Tampa, FL 33602'?

    Answer: 88 Park Blvd, Suite 400, Tampa, FL 33620

    Option C has a transposed ZIP code (33620 instead of 33602), which would route the package incorrectly.

  7. A clerk enters a recipient phone number as '(813) 555-01234' — one digit more than a standard US number. This is:

    Answer: An addition error creating an invalid phone number

    Standard US phone numbers have 10 digits; adding an 11th digit makes the number invalid, classifying this as an addition error.