In the 3rd Qrt of 2011, CSCMP’s Supply Chain Quarterly ran an article by Simon Bragg, Richard Stone, and Julian Van Geersdaele discussing the 7 signs you need a redesign.

Here are the 7 signs from their article:

1. You have objectives rather than strategies
2. People ask:  Why do we do things this way?
3. The number of customers and products is growing faster than your budget
4. Consolidation or collaboration is coming
5. You experience a major service failure
6. Fear is in the air
7. It’s time to renew a third-party logistics contract

These are all good reasons and the article can be a nice reference for you.