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Suite and Apartment Number 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.

Read the first 7 Suite and Apartment Number Errors flashcards as text

  1. Compare the two address entries and identify any error: Entry 1: 450 Maple Ave, Apt 3B, Boston, MA 02101 Entry 2: 450 Maple Ave, Apt 3D, Boston, MA 02101

    Answer: There is an error in the apartment number

    Entry 1 shows 'Apt 3B' while Entry 2 shows 'Apt 3D,' indicating a letter substitution error in the apartment designation.

  2. Which type of error is present when comparing 'Apt 7' with 'Apt 17'?

    Answer: Insertion error

    An insertion error occurs when an extra character is added; 'Apt 17' contains an inserted digit '1' not present in 'Apt 7.'

  3. A data entry clerk copies an address record: Original: 1234 Oak Street, Suite 200, Chicago, IL 60601 Copy: 1234 Oak Street, Suite 2000, Chicago, IL 60601 What type of error was made?

    Answer: Insertion error in the suite number

    An extra zero was inserted into the suite number, changing '200' to '2000,' making this an insertion error.

  4. Compare these two mailing records: Record 1: 789 Elm Street, Floor 3, Room 14, New York, NY 10001 Record 2: 789 Elm Street, Floor 3, Room 41, New York, NY 10001 The discrepancy is:

    Answer: A transposition error in the room number

    The room number '14' in Record 1 becomes '41' in Record 2, with digits 1 and 4 switched in position — a classic transposition error.

  5. When comparing suite numbers in two address records, which pair represents a transposition error?

    Answer: Suite 301 vs Suite 310

    In 'Suite 310,' the digits 0 and 1 from 'Suite 301' have been switched in position, which is the definition of a transposition error.

  6. In USPS address verification, what is the term for the apartment, suite, or unit number component of an address?

    Answer: Secondary address unit designator

    The USPS uses 'secondary address unit designator' to refer to apartment, suite, unit, or other sub-building identifiers in a mailing address.

  7. Compare these two entries: Entry A: 5520 Harbor Dr, Unit 4C, Miami, FL 33101 Entry B: 5520 Harbor Dr, Unit 4G, Miami, FL 33101 What is the error?

    Answer: Letter substitution error in the unit designation

    The letter 'C' in Entry A has been replaced with 'G' in Entry B, making this a substitution error in the unit's letter designation.