fixed inventory

app/models/stock_journal.rb

@@ -72,10 +72,13 @@ class StockJournal < ApplicationRecord
     end
   end
 
-  def self.update_stock_journal(item_code,remark)
-    stock = self.where("item_code=?", item_code).order("id DESC").first
-    stock.remark = remark
-    stock.save
+  def self.update_stock_journal(item_instance_code,remark)
+    product = InventoryDefinition.find_by_item_code(item_instance_code)
+    if !product.nil?
+      stock = self.where("item_code=?", item_instance_code).order("id DESC").first
+      stock.remark = remark
+      stock.save
+    end
   end
 
   def self.delete_stock_journal(item_code)