Value stream mapping is hard work because it requires looking at a process as if every step is non-value-added and is costing the organization time and resources. The 5 Whys is an easy way to root out as many non-value-added steps as possible.
A value stream map can look daunting, especially for anyone who has not worked much with flowcharts. But, alot can be gained from starting a value stream map, even if there is not enough data to do the perfect map the first time through.
A value stream mapping is a lean enterprise technique used to document, analyze and improve the flow of information or materials required to produce a product or service for a customer.
Can't afford special software or time for training? Value stream mapping (VSM) can be done with a simple spreadsheet. Admittedly some specialized functions will be unavailable, but Six Sigma practitioners can develop a VSM to address many issues.