Bulk create action Changeset Error

    resources =
      input.resources_attributes
      |> MmsBiztalk.bulk_create!(
        input.resource,
        :create,
        upsert?: true,
        upsert_identity: :unique_esolver_id,
        # for bulk actions upsert_fields must be specified
        upsert_fields: hd(input.resources_attributes) |> Map.keys(),
        return_stream?: false,
        return_records?: true
      )
      |> Stream.map(fn
        {:ok, created_resource} ->
          created_resource |> input.resource.to_status!([:syncing, :synced])

        _ ->
          nil
      end)
      |> Enum.to_list()

     ** (FunctionClauseError) no function clause matching in anonymous fn/2 in Ash.Actions.Create.Bulk.do_run/5
       (ash 2.9.10) anonymous fn(#Ash.Changeset<api: MmsBiztalk, action_type: :create, action: :create, attributes: %{...}, errors: [%Ash.Error.Changes.Required{field: :customer_id, type: :argument, resource: MmsBiztalk.InvoiceData, changeset: nil, query: nil, error_context: [], vars: [], path: [], stacktrace: #Stacktrace<>, class: :invalid}], data: #MmsBiztalk.InvoiceData<customer: #Ash.NotLoaded<:relationship>, data_in: #Ash.NotLoaded<:relationship>, __meta__: #Ecto.Schema.Metadata<:built, ...>, context: %{bulk_create: %{index: 0}}, valid?: false>, %{batch: [], count: 0, must_return_records?: false}) in Ash.Actions.Create.Bulk.do_run/5