# Package org.jbpm.casemgmt.api

- Interface Summary
  Interface | Description
  --- | ---
  CaseRuntimeDataService | Provides access to case(s) and its runtime data such as: available cases available milestones available stages Note: `CaseInstance.getCaseFile()` will always be empty when using `CaseRuntimeDataService`.
  CaseService | Provides case management operations.

- Exception Summary
  Exception | Description
  --- | ---
  AdHocFragmentNotFoundException | Thrown when accessing ad hoc fragment that does not exist
  CaseActiveException | Thrown then reopening a case that is already started/reopened
  CaseCommentNotFoundException | Thrown then accessing or manipulating case comment that does not exist
  CaseDefinitionNotFoundException | Thrown then accessing case definition that does not exist
  CaseNotFoundException | Thrown then accessing case that does not exist
  RoleCardinalityReachedException | Thrown when assigning entities (user or group) to role instance where assigned already entities reached defined cardinality.
  StageNotFoundException | Thrown when accessing stage that does not exist

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