Allow Max order quantity limit for an item Merged

We need to put a limit on how many items can be ordered in Opti. The limit should be X items. If the limit is exceeded, the items should not be added to the cart, & a pop-up should come up stating: "You have exceeded the maximum quantity allowed, please reduce your quantity. For bulk purchases, please contact customer service."

The out of the box feature is an order line "minimum", which forces the user to order a minimum order quantity. Things to keep in mind while building this enhancement:

1. Addition of a new attribute to be added to a product

2. The order line maximum at the product level will have to be maintained in Ecomm.

3. Inspect each order line at the time the quantity is entered and force the user to enter a quantity below the maximum.

Note: An order line maximum is only good for that one order placed by the user/customer, and so it will not protect you against multiple orders. Build for similar edge cases to prevent 'hacking' the workflow against the limit set for the product(s).