Use case details
Apart from main success scenario and its extensions, there are several other things that can be set on a use case.
Description
Set use case description using the description sub-element:
<use-case goal="Transfer funds">
<description>Some description of the use case.</description>
</use-case>The description can for example be used to refer to a requirement that initiated writing the use case, or to refer to some attachments relevant to the use case as a whole.
It can also be used to contain the use case narrative / story, before it is expanded into main success scenario. After the expansion, the narrative should be deleted: it is not recommended to duplicate the steps of use case in both main success scenario and narrative.
Stakeholders' interests
Set use case stakeholders' interests using the stakeholders-interests sub-element:
<use-case goal="Transfer funds">
<stakeholders-interests>
<interest stakeholder="Client">Credit the amount to credit account.</interest>
<interest stakeholder="Bank's retail department">Charge the fee.</interest>
<interest stakeholder="Bank's audit department">Have all successful transactions posted into
transaction log.</interest>
<interest stakeholder="Bank's audit department">Have all failed transactions posted into
audit log.</interest>
</stakeholders-interests>
</use-case>Preconditions
Set use case preconditions using the preconditions sub-element:
<use-case goal="Transfer funds">
<preconditions>
<item>User is logged in.</item>
<item>Client is present at the branch office.</item>
</preconditions>
</use-case>Trigger
Set use case trigger event using the trigger sub-element:
<use-case goal="Transfer funds">
<trigger>Client asks to transfer funds.</trigger>
</use-case>Success and minimal guarantees
Set use case success and minimal guarantees using the success-guarantees and minimal-guarantees sub-elements:
<use-case goal="Transfer funds">
<minimal-guarantees>
<item>Transfer failure and its reason logged in audit log.</item>
<item>Error message displayed to user.</item>
<item>No changes made to accounts.</item>
</minimal-guarantees>
<success-guarantees>
<item>Amount and fee debited from the debit account.</item>
<item>Amount credited to the credit account.</item>
<item>Fee credited to proper general ledger account.</item>
<item>Transfer logged in transaction log.</item>
</success-guarantees>
</use-case>Notes
Set use case notes using the notes sub-element:
<use-case goal="Transfer funds">
<notes>Some notes at the end of the use case.</notes>
</use-case>The notes section can for example list outstanding issues in the use case, etc.
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