# Class ProcessNotFoundException OptimaJet.Workflow.Core.Fault.ProcessNotFoundException Represents an exception thrown when a requested process cannot be found. Namespace: [OptimaJet.Workflow.Core.Fault](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/) ```csharp public class ProcessNotFoundException : Exception, ISerializable ``` ## Type Hierarchy - [Exception](https://learn.microsoft.com/dotnet/api/system.exception) - ProcessNotFoundException Current type - Implemented interfaces - [ISerializable](https://learn.microsoft.com/dotnet/api/system.runtime.serialization.iserializable) ## Constructors `public ProcessNotFoundException(Guid id)` Initializes a new instance of the [ProcessNotFoundException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ProcessNotFoundException/) class for the process identifier that was not found. ### Parameters | Name | Type | Description | | --- | --- | --- | | `id` | `Guid` | The process identifier that was not found. | ## Properties `public Guid ProcessId { get; }` Gets the identifier of the process that could not be found. [Previous ProcessExecutionException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ProcessExecutionException/) [Next ProcessSchemeBuildException](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Fault/ProcessSchemeBuildException/)