PP implementation in Paper Conversion Industry (IS Mill)

Hi Experts

I need your guidance in the implementation process of paper conversion industry for PP module (production process and planning both)
I have gone through many links on the SCN forum and understood that, in implementation process, IS Mill will be required.

Please make me suggest that need I do the all implementation in ECC or SCM/APO will also be required?

It will be very helpful if anyone can send me a Business process document along with transaction code.

Thank you!

Best Regards

Amit Sharma