It would be nice if there were one or two more fields where data grabbed via Z39.50 could be imported into ILLiad. In particular, "Item Num" would be an ideal place to hold a barcode, rather than having to concatenate it to a different value (as described here: https://support.atlas-sys.com/hc/en-us/community/posts/360006750353-Finding-Importing-the-Barcode-Field).