Checked the cron job process to see how the JDA is being updated and if I can connect it to the test environment for execution, as per checking, it can be connected to the test and executed. This will be tested on Monday. Confirmed the cause of error in the web application regarding the old_quantity for fixing as this is encountered by the user as well, this is encountered on my side but still confirming if the findings are the cause of the problem, initial findings are the web application extracted no value on the field though it should have value.