One of the best use cases is centralizing supplier and customer data into our finance system. We identified that there were many duplicate suppliers and customers and so a lot of time was spent reporting.
When the tsunami happened in 2009, our top management asked us how many suppliers were impacted in that particular area and how it would impact our supply chain cycle. When we tried to answer this question we thought that it would take one or two weeks, but it took our entire team three to four months to identify how many suppliers were impacted. That showed how important it is to remove the master data from our financial system and start maintaining it separately.