Sales Contract Life cycle Management

Sales Contract Management Experts,

What are SAP's recommended Best practices for Sales contract Life cycle Management.?

for e.g.. What does SAP recommends for amendments to be made during the life of contract (Just for example- Changes to pricing, Payment terms as an example). These changes could be forward looking i..e effective from a future start date. How do you address changes to existing contract parameters

I found some mention of Contract Life cycle Management on Purchasing side but could not locate anything on Sales side

Thanks in advance for your inputs