Thank you, @zgreathouse, but those two check boxes were already enabled.
When checking the stock of an item are you using the following endpoint to get the stockQuantity or are you checking the 'stockCount' field on an item?
GET v3/merchants/mId/items/itemId?expand=itemStock
(The 'stockCount' field is decremented. Please see our API reference docs)
I am checking the stock quantity through /items/itemID, looking at item->itemStock->quantity. I am also looking at it through the web interface. I have tried testing on items that have a fixed price, and those that have a per-unit price. The quantities never change. I am guessing that I am not closing out the order correctly.
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