.. _label-uc-service-remove:

Use-Case: Remove a Service
***********************************************************************

Short Description
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A service is removed from system.

Actor(s)
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Officer


Trigger(s)
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- Imports (removing existing data)
- Web form(s) submitted by authorized user


Result(s)
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- The given service and all connected data (contracts, etc.) were
  removed from the system.
- All removed data is archived.


Incoming Data
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- Service ID

Outgoing Data
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- Message about service removal
- Log message
- Archive entry


Precondition(s)
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- Service ID must exist.
- Submitting user must be authorized to perform the operation.


Postcondition(s)
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Invariant(s)
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A service cannot be removed from the system while still contracts
connected to it exist in the system.


Essential Steps
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- System checks service ID validity.
- System checks whether any contracts created by the requested service
  are still in use in the system and cancels operation if so.
- Removed data is archived.
- System removes the given service.


Open Issues
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Remarks
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