# Class ActivityAlreadyExistsException

OptimaJet.Workflow.Core.Fault.ActivityAlreadyExistsException

Represents an exception raised when a workflow scheme contains an activity with the specified name.

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

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

## Type Hierarchy

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

## Constructors

`public ActivityAlreadyExistsException(string activityName, string schemeCode)` 

Initializes a new instance of the [ActivityAlreadyExistsException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ActivityAlreadyExistsException/) class when a duplicate activity name is encountered for a workflow scheme.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `activityName` | `String` | The name of the activity that is already present in the scheme. |
| `schemeCode` | `String` | The code of the workflow scheme that already contains the activity. |

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