# Class ActionNotFoundException

OptimaJet.Workflow.Core.Fault.ActionNotFoundException

Represents an exception raised when a workflow activity references an action that is not found in its scheme definition.

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

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

## Type Hierarchy

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

## Constructors

`public ActionNotFoundException(string actionName, string activityName, string schemeCode)` 

Initializes a new instance of the [ActionNotFoundException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ActionNotFoundException/) class.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The action name that was not found. |
| `activityName` | `String` | The workflow activity name where the action was expected. |
| `schemeCode` | `String` | The code of the workflow scheme that contains the activity. |

### Remarks

The message is initialized using `Action with name '{actionName}' was not found in '{activityName}' activity '{schemeCode}' scheme.`.

[Previous ParameterMapping](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Execution/ParameterMapping/) [Next ActivityAlreadyExistsException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ActivityAlreadyExistsException/)