Knowledgemanagementhas been claimed as the correct response to rapid change. Decisions need to be madein light of up to date knowledge. The changing nature of the knowledgeraises issues of quality assessment and monitoring. In this paper, wemotivate the need for system monitoring of knowledgequality and present a set of structural properties that promote knowledgeconsistency. Webriefly discuss systemmonitoring of these properties.