USPS - Error Detection Test Error Detection Mail Processor 1

Question 1

A mail piece shows the return address state as 'CA' but the ZIP code is 73301, which belongs to Texas. What type of error does this represent?

Accepted Answer

State-ZIP mismatch error

Answer

ZIP code 73301 is assigned to Austin, TX, not California. When the written state abbreviation conflicts with the geographic region of the ZIP code, this is a state-ZIP mismatch error that a mail processor must flag.

Question 2

An envelope addressed to '88 Wisteria Ln, Springfield, IL 62702' has a barcode that decodes to '88 Wisteria Lane, Springfield, IL 62701'. Which element contains the discrepancy?

Accepted Answer

ZIP code

Answer

All elements match except the ZIP code: the printed address shows 62702 while the barcode encodes 62701. A mail processor must catch barcode-to-address mismatches at the ZIP code level.

Question 3

A mail processor reads the address '4O7 Birchwood Ave' and notices something unusual. What is the most likely error?

Accepted Answer

A letter substituted for a digit in the address number

Answer

The character 'O' (the letter O) has been written or printed in place of '0' (zero), making the house number read '4O7' instead of '407'. This is a character-substitution error common in handwritten or low-quality printed mail.

Question 4

Which of the following ZIP codes contains a formatting error that would prevent automated processing?

Accepted Answer

3O2l4

Answer

ZIP code '3O2l4' contains the letter O in place of a zero and the letter l (lowercase L) in place of a 1, making it '3O2l4' rather than the valid '30214'. Automated systems cannot process codes that mix alphabetic characters with digits.

Question 5

A flat-tray of mail is being sorted and one piece shows the destination as '1138 Sunet Blvd, Los Angeles, CA 90028'. What error should the processor flag?

Accepted Answer

Misspelled street name

Answer

The street name is spelled 'Sunet' instead of the correct 'Sunset'. This is a typographical omission error in the street name that could cause misdelivery or return to sender.

USPS Error Detection Test Practice Test

USPS Error Detection Test Practice Test

USPS - Error Detection Test Error Detection Mail Processor 1