I have a nested form involving resources Task which has_many TaskMembers. Since I’m passing [%TaskMember{}] as data, the first TaskMember form type shows action_type :update (and passes validation when submitted alone), whereas from the 2nd TaskMember form and thereafter, the type becomes :create, and somehow this one causes a submit_error like the following. I believe the error is referring to the task_id required per the relationship definition in TaskMember as shown below.
I thought manage_relationship in Task’s create action will handle the passing of task id to TaskMember, but it doesn’t seem to be true in this case. What could I be missing? Thanks in advance.

    errors: [
            %Ash.Error.Changes.Required{
              field: :task_id,
              type: :attribute,
              resource: MyApp.Accounts.TaskMember,
              changeset: nil,
              query: nil,
              error_context: [],
              vars: [],
              path: [],
              stacktrace: #Stacktrace<>,
              class: :invalid
            }
          ],

 relationships do
    belongs_to :task, MyApp.Tasks.Task do
      api MyApp.Tasks
      allow_nil? false
      attribute_writable? true
    end

Live.ex

 form =
      AshPhoenix.Form.for_create(Task, :create,
        api: MyApp.Tasks,
        actor: socket.assigns.current_user,
        forms: [
          auto?: true,
          task_members: [
            resource: TaskMember,
            data: [%TaskMember{}],
            create_action: :create,
            update_action: :update,
            type: :list,
            actor: socket.assigns.current_user
          ]

  def handle_event("add_task_member", _params, socket) do
    form = AshPhoenix.Form.add_form(socket.assigns.form, :task_members)

    task_member_list = form.forms.task_members

    new_form = %{
      socket.assigns.form
      | forms: %{socket.assigns.form.forms | task_members: task_member_list}
    }

    {:noreply,
     socket
     |> assign(form: new_form)
  end

task.ex

 create :create do
  ...
     argument :task_members, {:array, :map}
      change manage_relationship(:task_members, type: :create)
    end