Olof Simren - Microsoft Dynamics 365 Business Central Blog

The description field of an item in Dynamics NAV is 50 characters long. There is also a description 2 field that can be used (also 50 characters long) and extended texts that can be attached to an item.

The item number field is 20 characters long in Dynamics NAV. The length of this field is not recommended to change since it is in so many places of the application.

This is a very common request, especially from companies that creates a lot of new items. Unfortunately there is no copy function for an item, what you could do is to setup templates that can be used when creating new items.

Yes, assuming the item is not lot or serial number tracked and the location is not setup with bins. In the later versions (from 2013 and forward) there is also a field on the item card, Prevent Negative Inventory, that can be set to determine if you want to allow negative inventory or not. Normally you don’t want to allow negative inventory.

This is done through the Item Tracking Code field on the item card. If an item has transactions you cannot change from an item tracking code with tracking to an item tracking code that has been setup with different tracking or no tracking. The workaround is to change NAV so that it allows you to change this field if all item ledger entries are closed. See Activate Item Tracking for Items with Ledger Entries.

Yes, an item can be deleted as long as it is not used anywhere (like in a journal, sales or purchase document, on a production order, service contract, etc.). As with customers and vendors, transactions (item ledger entries and service ledger entries) can exists but they have to be in prior fiscal years and completely adjusted and closed. When deleting an item with transactions the transactions gets a blank item no. It is not recommended to delete items with transactions.