# Class ParameterNotFoundException

OptimaJet.Workflow.Core.Fault.ParameterNotFoundException

The exception thrown when a requested parameter is not found in a workflow scheme.

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

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

## Type Hierarchy

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

## Constructors

`public ParameterNotFoundException(string parameterName, string schemeCode)` 

Initializes a new instance of the [ParameterNotFoundException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ParameterNotFoundException/) with a message describing the missing parameter and scheme.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `parameterName` | `String` | The name of the missing parameter. |
| `schemeCode` | `String` | The workflow scheme code used to search for the parameter. |

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