A user enters letters into a Quantity field that only accepts numbers
Field Test
The Phone Number field requires 10 digits and automatically rejects entries like “123-45-678”.
Field Test
During the processing of customer payments, the system frequently misinterprets handwritten invoice numbers. For example, the number “11807” is sometimes scanned as “I1807,” causing the payment to be applied to the wrong customer account. As a result, several customers received inaccurate account balance notices.
Field Test
When recording employee timecards, handwritten “7”s are sometimes interpreted by the system as “1”s during data entry. As a result, several employees' weekly hours were recorded incorrectly.
Field Test
A phone number field requires exactly 10 digits.
Field Test
Employee working hours entered must be between 0 and 24 hours per day.
Range Test
Credit limit for a customer must be equal to or greater than $0 and less than or equal to $1M.
Range Test
A payroll clerk accidentally entered an hourly wage of $850 for a part-time employee who earns $18.50, causing the payroll system to calculate an excessively high paycheck.
Range Test
A clerk enters Customer ID 98421, but this ID does not exist in the Customer master file.
Validity Test
A clerk entered a supplier number that does not exist in the vendor master file, causing the purchase order to be sent to an invalid or unknown supplier.
Validity Test
ZIP code exists
Validity Test
OrderDate is not future
Validity Test
Whether the customer ID, C4832, exists in the customer master file.
Validity Test
ZIP 92831 must correspond to California
Valid Combinations Test
Payment Method = Credit Card requires a Card Number field to be completed
Valid Combinations Test
A warehouse clerk accidentally selected product code A992 with warehouse location L03, even though that product is never stored in that location. The system processed the transaction, creating inaccurate inventory records.
Valid Combinations Test
User enters Customer ID 12345, then system displays: “Customer: ABC Electronics, Fullerton, CA” before the transaction continues.
Closed-Loop Verification
A clerk entering customer IDs frequently mistypes digits, resulting in orders being placed under the wrong customer. Because the system does not display the customer name after the ID is entered, the errors go unnoticed until invoices are sent.
Closed-Loop Verification
Entering a product code shows its description & price.
Closed-Loop Verification
A sales return should have a negative amount to reduce accounts receivable.
Sign Test
A clerk processing sales returns accidentally entered a customer refund of $145 as +145 instead of –145. As a result, the system increased the customer’s balance instead of decreasing it, causing inaccurate accounts receivable totals.
Sign Test
Employee ID must be exactly 6 characters. 12345 (Employee ID entry)
Length Test
Zip code must be 5 digits.
Length Test
While entering new customer records, a clerk mistakenly typed a 7-digit phone number into the field that requires a 10-digit number. The system accepted the entry, resulting in incomplete and unusable contact information.
Length Test