Hi there, burlesonava!
You'll be happy to know that there's no limit when entering inventory items, so you won't need to free up more of them. However, there isn't a custom field like in QuickBooks Desktop.
I like the idea of adding a custom field though. Let's suggest this to our product development team. As I do it here, you can also click on the Gear icon and choose Feedback. It's a way of letting them know about the features you like to add in the product.
lf you have more questions, you can always use this thread. If you have a it's a totally different question. like a different topic, feel free to post another one.
