Data processor, data processing system, data processing method, and computer product, with error message display

摘要

A data processor (client PC) is connected to a document data management apparatus (server PC) that manages the location of document data listed in a document data list. The data processor displays the document data list, and inquires the document data management apparatus about the location of document data. The data processor compares the location of the document data with that indicated in the document data list. When the two locations do not match, the data processor denies operation on the document data.