# Class OperationGroupNotFoundException OptimaJet.Workflow.Api.Exceptions.OperationGroupNotFoundException Exception thrown when an operation group cannot be found. Namespace: [OptimaJet.Workflow.Api.Exceptions](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/) ```csharp public class OperationGroupNotFoundException : 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) - OperationGroupNotFoundException Current type - Implemented interfaces - [ISerializable](https://learn.microsoft.com/dotnet/api/system.runtime.serialization.iserializable) ## Constructors `public OperationGroupNotFoundException()` Initializes a new instance of the [OperationGroupNotFoundException](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/OperationGroupNotFoundException/) class. [Previous LicenseUnsupportedException](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/LicenseUnsupportedException/) [Next PermissionTargetNotFoundException](https://api.workflowengine.io/web-api/OptimaJet.Workflow.Api.Exceptions/PermissionTargetNotFoundException/)