front 1 A user enters letters into a Quantity field that only accepts numbers | back 1 Field Test |
front 2 The Phone Number field requires 10 digits and automatically rejects entries like “123-45-678”. | back 2 Field Test |
front 3 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. | back 3 Field Test |
front 4 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. | back 4 Field Test |
front 5 A phone number field requires exactly 10 digits. | back 5 Field Test |
front 6 Employee working hours entered must be between 0 and 24 hours per day. | back 6 Range Test |
front 7 Credit limit for a customer must be equal to or greater than $0 and less than or equal to $1M. | back 7 Range Test |
front 8 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. | back 8 Range Test |
front 9 A clerk enters Customer ID 98421, but this ID does not exist in the Customer master file. | back 9 Validity Test |
front 10 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. | back 10 Validity Test |
front 11 ZIP code exists | back 11 Validity Test |
front 12 OrderDate is not future | back 12 Validity Test |
front 13 Whether the customer ID, C4832, exists in the customer master file. | back 13 Validity Test |
front 14 ZIP 92831 must correspond to California | back 14 Valid Combinations Test |
front 15 Payment Method = Credit Card requires a Card Number field to be completed | back 15 Valid Combinations Test |
front 16 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. | back 16 Valid Combinations Test |
front 17 User enters Customer ID 12345, then system displays: “Customer: ABC Electronics, Fullerton, CA” before the transaction continues. | back 17 Closed-Loop Verification |
front 18 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. | back 18 Closed-Loop Verification |
front 19 Entering a product code shows its description & price. | back 19 Closed-Loop Verification |
front 20 A sales return should have a negative amount to reduce accounts receivable. | back 20 Sign Test |
front 21 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. | back 21 Sign Test |
front 22 Employee ID must be exactly 6 characters. 12345 (Employee ID entry) | back 22 Length Test |
front 23 Zip code must be 5 digits. | back 23 Length Test |
front 24 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. | back 24 Length Test |