DOCUMENT MANAGEMENT SYSTEM

摘要

A document management system creates a copy of a first purchase document when a request to modify the first purchase document is received. The copy of the first purchase document is a second purchase document. The system receives modifications for the second purchase document. The system requests approval of the modifications of the second purchase document. The system receives approval of the modifications of the second purchase document. The system integrates the modifications of the second purchase document into the first purchase document. The first purchase document remains active at least after the second purchase document is created and before the receiving approval.