Wait for form task problem


I’m trying to get a workflow working with “Create Form Task” and “Wait for Form Task and Resume”. However, when I run the example snippet it gives the error mentioned below, saying I should configure the an IPersistenceBookmarks extension, which I’m not sure how to do.

If I disable the “Wait for Form Task and Resume” activity, everything works fine, and a Task is created in my online Orchestrator.

However, when the “Wait for Form Task and Resume” is in the workflow, the error is thrown on running it.

I’ve included my dependencies:
project.json (1.1 KB) Main.xaml (3.1 KB)



Message: An extension of type ‘UiPath.Activities.Contracts.Persistence.IPersistenceBookmarks’ must be configured in order to run this workflow.

Exception Type: System.Activities.ValidationException

RemoteException wrapping System.Activities.ValidationException: An extension of type ‘UiPath.Activities.Contracts.Persistence.IPersistenceBookmarks’ must be configured in order to run this workflow.
at System.Activities.Hosting.WorkflowInstanceExtensionCollection…ctor(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
at System.Activities.Hosting.WorkflowInstanceExtensionManager.CreateInstanceExtensions(Activity workflowDefinition, WorkflowInstanceExtensionManager extensionManager)
at System.Activities.Hosting.WorkflowInstance.RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
at System.Activities.WorkflowApplication.EnsureInitialized()
at System.Activities.WorkflowApplication.Enqueue(InstanceOperation operation, Boolean push)
at System.Activities.WorkflowApplication.SimpleOperationAsyncResult.Run(TimeSpan timeout)
at System.Activities.WorkflowApplication.BeginRun(AsyncCallback callback, Object state)
at UiPath.Executor.RobotRunner.d__88.MoveNext()

1 Like

How does it work to change to the following setting in the project.json file?
“supportsPersistence”: true


Thanks! I wasn’t aware of the “Supports persistence” option, I switched it on in the Project settings, and everything worked.

Bumping this one up. Same issue. Wait for task and resume works fine when running independently as a main but if invoked then this activity bombs completely. I have checked project file and attribute for supportsPersistence: true.
Truly maddening:(