What function do I need to use to get the column - Available? Is it the inventoryDetailSubrecord.getSublistValue? The column lives in the Inventory Details tab on the Lot Numbered Item

It's a inventory balance saved search which isn't scriptable. You have to create an item search and add the

available

and

inventory number

columns.

Ah right. So the inventory details sublist is basically a search and I'd need to mimic that. Thanks for the headsup.

If you click 'Customize View' you can see how the saved search is set up.

Ah yes, didn't think about that. Thank you.