The data quality of demandtec has been very good for us as it gives accurate information about our inventory levels compared against historical trends which helps in planning accordingly without any issues or glitches at all! I have not found anything bad so far but if there are then i would like you guys look up more details because they might be something small yet important enough where people can use them easily & effectively!! We realized how much we needed this tool when one day suddenly my boss decided he wanted me to do an analysis using their system instead off doing manually what used too take time (our warehouse manager does manual calculations).