message: add LineItemID back to LineItemSchema
diff: @@ -88,6 +88,7 @@ const TrackingOptionsSchema = Entity.SchemaObject({
  });
  const LineItemSchema = Entity.SchemaObject({
  + LineItemID: { type: String },
  Description: { type: String },
  Quantity: { type: Number },
  UnitAmount: { type: Number },
  