question

Your question has got so many conditions, that you could get at last as many possible answers or ways to solutions. I assume you have a really large storage area of thousands of items. You create a list of nine items completely independent of the storage area. The partition ID of the list is the Order ID. Then you look for items in your storage area which match the conditions on your order list like size, shape, material, quality, and so on. You mark the items, that belong to an order list such they aren't available for another order. Then you pull the items from the area into a queue via conveyor system. The batching size of the queue is set to the number of ordered items on the list. The queue collects the items and release the batch.

The order isn't batched if one item is missing because it isn't in storage area. The order is a back order then and is fulfilled possible later. Are the items, which are on the list still blocked or are the free for another order?

Or a different approach: You define only items in a storage area that match the conditions of your orders. The items are always available. You don't have to block them. This leads to a model wherein you create items that are on an order list. You fill a order list with the attributes you are randomly setting. You need not a large storage area of thousands of items anymore because you create them when the list is done.

I suggest you ask a question which is precise and copes with one aspect, may be two. You should describe the environment of the question or link to other questions.