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. Description is not available. Provide an extension hook to customize ItemLocVirtRef. Provide an extension hook to localize ItemLocVirtRef. Description is not available. Description is not available. Description is not available. Provide an extension hook to customize ItemLocPhysRef. Provide an extension hook to localize ItemLocPhysRef. Description is not available. Unique identifier for the item. Description is not available. Provide an extension hook to customize ItemLocRef. Provide an extension hook to localize ItemLocRef. This type can hold a string of max length of 25 characters. This type can hold a number of digits count 10.