Just enough to identify what you are looking at. This line contains several important components. 001 is the item number line. The 1A that follows the item number is actually made up of two separate codes. A is the default.
L is used for books and scores.
T is used for Bloomington sound recordings, and for Frontlog items. The other note frequently made in the copy holdings screen is the Universal Message . These notes display in the public catalog. They are most commonly used with collected work sets to refer the user to the main record for the set. Creating an item record An item record contains the barcode, and charge information for a book, score, etc.