SuiteTalk - Removing an item from item fulfillment

We have a 3pl that we send item fulfillments to. Occasionally our inventory is out of synch and the 3pl is unable to fulfill an item. When they set itemReceive to false the item still appears in the item list of the fulfillment. Is there a way to remove the item from the fulfillment after it has been created in SuiteTalk.

Here's some sample code that uses NetSuite's NSClient C# sample code:

    public static void NRIItemFulfillment()

    {

      RecordRef rr = new RecordRef();

      rr.internalId = "23254121";

      rr.type = RecordType.itemFulfillment;

      rr.typeSpecified = true;

  

      ReadResponse response = Client.Service.get(rr);

      ItemFulfillment ifu = (ItemFulfillment)response.record;