# Class ProviderFactoryNotFoundException OptimaJet.Workflow.Api.Exceptions.ProviderFactoryNotFoundException An exception thrown when a provider factory is not found. Namespace: [OptimaJet.Workflow.Api.Exceptions](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/) ```csharp public class ProviderFactoryNotFoundException : InvalidOperationException, ISerializable ``` ## Type Hierarchy - [Exception](https://learn.microsoft.com/dotnet/api/system.exception) - [SystemException](https://learn.microsoft.com/dotnet/api/system.systemexception) - [InvalidOperationException](https://learn.microsoft.com/dotnet/api/system.invalidoperationexception) - ProviderFactoryNotFoundException Current type - Implemented interfaces - [ISerializable](https://learn.microsoft.com/dotnet/api/system.runtime.serialization.iserializable) ## Constructors `public ProviderFactoryNotFoundException(string providerId)` An exception thrown when specified provider factory is not found. ### Parameters | Name | Type | Description | | --- | --- | --- | | `providerId` | `String` | The persistence provider id of the provider factory that was not found. | [Previous ProviderFactoryDuplicateProviderIdException](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/ProviderFactoryDuplicateProviderIdException/) [Next SnapshotIsObsoleteException](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/SnapshotIsObsoleteException/)