In essence, this dissertation is the proof that both the quality of item master data and the management of this data in daily work processes on both retailer and supplier side arena t sufficiently considered. In order to investigate this aspect, the first step is to lay down the theoretical foundations for the terms data quality, item master data and their management. It also classifies the benefits of a better data quality such as cost savings, faster flow of goods and increased customer satisfaction from the supplier perspective with respect to the use of data in retail trade. Furthermore, it takes the difficulty of capturing such benefits in terms of concrete profitability into account. In the second step, the item master data quality wi...