The Item Information window doesn't include fields or lists for all of your stock information
If you track extensive information about your items and cannot find corresponding fields in Accounting Plus, you can create custom lists and custom fields to enter the information. First create and name custom lists and fields using the Custom List and Field Names window - Item view. Then add entries to each of your custom lists using the Custom Lists window - Item view. (To create list entries on a custom list)
If you add them to the design of your reports, you can use custom lists to customise some reports. You also can include your custom field information on some reports. Stock reports that you can customise include: