How to create a form that alerts if inspection items differ from a previous form submission
I have created form where a user is able to input ID's (as integers) for four items (item 1, item 2, item 3, item 4). Items will be inspected/inventoried in no particular order. For example the inspection could record item 3 first, item 4 second, item 2 third and finally item 1.
In a week's time I want the user to perform another inspection of these items. Next week's inspection could record the items again in no particular order. For example next week's inspection could record item 2 first, then item 1, then item 3 and finally item 4.
I want to be able to be able to fire off an alert if one of those items inventoried during the latest inspection is either missing or if one of the item ID's from the latest inspection doesn't correspond with the item ID's recorded during a previous inspection.
Any ideas how to pull this off?