what is the reason of negative inventory

AI generated answer (using internal Slack threads):

Negative inventory in NetSuite can occur due to several reasons: 1. Fulfillment beyond committed: Depending on your preferences setup, NetSuite can allow you to fulfill beyond committed, which can lead to negative inventory. 2. Transaction deletion: If a transaction related to an item is deleted, it can cause the inventory count to go negative. 3. Lot numbered inventory: If your inventory is lot numbered, it should not allow negative quantity. However, if not transacted properly, negative inventory can still occur. To prevent negative inventory, you can use a SuiteBundle, but it might not prevent negative quantity during Sales Item Fulfillment. To identify the cause of negative inventory, you can look at the item record and trace back through the history of the related records to see where things stop making sense. If the inventory is negative, then the item cannot be fulfilled. Therefore, if you see fulfillments at a time when the inventory appears that it would have been negative based on the history then you can expect something was deleted. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******