CSPS Use Case : Pay Fee with Credit Card 2.0


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Collegiate Sports Paging System
Use Case Specification: Pay fee with credit card

Version 2.0
Revision History




Date

Version
Description
Author


October 9, 1999
1.0
Initial version
Context Integration


December 1, 1999
2.0
Update after Elaboration
Context Integration


Table of Contents

Pay Fee With Credit Card
Flow of Events
Special Requirements
Preconditions
Postconditions
Extension Points

Pay Fee With Credit Card
Brief Description
This use case occurs when a new subscriber wants to pay their annual
subscription fee by specifying a credit card number and PIN. This may also occur
when an existing subscriber wants to renew (see alternate flow 1)
Flow of Events
Basic Flow

Subscriber selects "pay fee with credit card"
System checks to see if user is a current subscriber.  If the user is
a new subscriber, a new subscriber ID is generated by the system (using any
algorithm that will generate a unique number - this may, for instance, be a
continually incrementing number within the system).
System checks to see if current subscriber credit card information is on
file.  If it is, user is presented with indicator of credit card on
file (using the last four digits of the card number), and asked if this card
should be used.
If user declines current card information on file, system prompts
subscriber for credit card number, expiration date, and (optionally) PIN
System verifies that expiration date on credit card has not already
passed.
System sends credit card info to external system for charge validation and
application
Upon receipt of validation, system updates subscriber record to indicate
new expiration date

Alternate Flows

Subscriber renews subscription
When this occurs, the flow runs as follows:

Subscriber selects "pay fee with credit card"
System displays current credit card information
User either accepts information as is or updates appropriately
System sends credit card info to external system for charge validation
and application
Upon receipt of validation, system updates subscriber record to indicate
new expiration date

Invalid credit card information
If the information provided by the subscriber is not validated by the
external system, an error message will be displayed and the subscriber record
will NOT be updated (so that the last steps in the above flows will not be
executed).  If the credit card has expired, an error message will be
displayed and the subscriber record will not be updated.

Special Requirements
None.
Preconditions
User is identified as a subscriber and has a subscriber ID associated with
them.   For first-time subscribers, a preliminary subscriber entry is
made.
Postconditions
None.
Extension Points
None.

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