APO Production Planning and Detailed Scheduling is a set of functionalities around In-house Production Planning, External Procurement Planning, Resource Scheduling and Sequence Optimization. PP/DS is primarily divided into two areas - Production Planning and Detailed Scheduling. This component has the highest amount of integration between APO and the OLTP (R/3 or ERP) system for real-time transaction data transfer back and forth. This is made possible by a standard interface from SAP named Core Interface Function.
The following links can give an overview of PP/DS:
List of PPDS Knowledge Base Articles (KBAs) List of PPDS Integration Knowledge Base Articles (KBAs) List of PPDS Related BAdIs List of PPDS Related Extractors List of PPDS Related Reports List of PPDS Related Transactions List of PPDS Related User Exits