This is root element of this document which contains name space definitions for the document elements. It's a referenced element. For detailed description, please refer referenced element doc. It's a referenced element. For detailed description, please refer referenced element doc. Description is not available. Unique identifier for the item. Unique identifier for the item/group at the level above the item. Indicates if the sub-transaction level item is designated as the primary sub-transaction level item. For transaction level items and above, the value in this field will be 'N'o. This field will hold the format id that corresponds to the item's variable UPC. This value is only used for items with variable UPCs. This field holds the prefix for variable weight UPCs. The prefix determines the format of the eventual UPC and will be used to decode variable weight UPCs that are uploaded from the POS. This type can hold a number of digits count umber_type. Provide an extension hook to customize ItemUPCDesc. Provide an extension hook to localize ItemUPCDesc. This type can hold a string of max length of 25 characters. This type can hold a string of max length of 6 characters. This type can hold a number of digits count 2. This type can hold a string of max length of 1 characters.