What forecast accuracy can the software provide?

Forecasting accuracy depends upon several factors and surely one of them is the ability of the software to most smartly use the forecasting algorithms. However, this is the last step in the process. What is more important for this to happen is the quality of the data that is supplied. Whether the data exhibits a good demand pattern. Whether the historical data has been cleaned of the outliers. Also since most software will do a bottoms up forecasting at the lowest level, there cannot be one answer to this question. The best way to find this out is to test the software with the clean data set.