Please identify at least six ambiguities and omissions from

Please identify at least six ambiguities and omissions from the following information:

Discover ambiguities and/or omissions in the following statement of requirements for part of a ticket-issuing system: \"An automatic ticket issuing system sells rail tickets. Users select their destination and input a credit card and a personal identification number. The rail ticket is issued, and their credit card account is charged with its cost. When the user presses the start button, a menu display of potential destinations is activated along with a message to the user to select a destination. Once a destination has been selected, users are requested to input their credit card. Its validity is checked and the user is then requested to input a personal identifier. When the credit transaction has been validated, the ticket is issued.\"

Solution

AMBIGUITIES AND OMISSIONS IN TICKET- ISSUING SYSTEM :

If a user want to buy multiple tickets,user doesn’t have option.If user want to cancel tickets, he doesn’t have option.Users cannot buy tickets with cash.

Finally, the system should prompt customer to print the receipt which includes the destination details and payment type. A receipt should have been issued to state whether the purchase has been made successfully.