# Class StatusNotDefinedException

OptimaJet.Workflow.Core.Fault.StatusNotDefinedException

Represents an exception that is thrown when a workflow status referenced by the runtime is not defined.

Namespace: [OptimaJet.Workflow.Core.Fault](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/)

```csharp
public class StatusNotDefinedException : Exception, ISerializable
```

## Type Hierarchy

-   [Exception](https://learn.microsoft.com/dotnet/api/system.exception)
    -   StatusNotDefinedException Current type
        -   Implemented interfaces
            -   [ISerializable](https://learn.microsoft.com/dotnet/api/system.runtime.serialization.iserializable)

## Remarks

Use this exception when a status value cannot be matched to a known status definition.

[Previous ShutdownException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ShutdownException/) [Next TimerAlreadyExistsException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/TimerAlreadyExistsException/)