Getting Started Guide and other documents about S&OP Supply Planning
1. Getting Started Guide
SAP note 2238074 contains several attached documents providing addtional information about Supply Planning in IBP / S&OP. One of these documents is a Getting Strated Guide explaining how to get best familiar with the supply planning heuristic and the optimizer.
2. Supply Planning operator section in Model Configuration guide (Section 10.9)
3. SAP Application help