As I am new in APO and it might be basic question for the expert. But it is very special for me to learn and get knowledge in APO. I have tried to study on Internet, read sap training book but something need to your help.
From your support, I can build the bridge to connect APO and ECC successful. I also created some integration model to transfer data between APO and ECC. I can check the stock, view master data and run heuristic in Product view. But in Product view transaction code (RRP3), when I do ATP check, it always said that component is missing althout the stock can cover these planned order. You can see the picture below
This is the stock of 102-130