It's in Italian but with the online translation it's easy to understand. In addition to the general architecture, you can also find various PDF documents that illustrate the application of SAM EPR2 for each individual business sector. For the practical implementation of the SAM EPR2 system you can also contact the company that supplies it and ask them for advice. They are experts. Good luck and good work.
"Project Management for ERP Implementation" by Claudia Nahm https://www.sciencedirect.com/science/article/pii/S0378720607000547
"ERP Implementation: A Manager's Guide" by Jesús Lora-Sánchez https://www.routledge.com/Directing-the-ERP-Implementation-A-Best-Practice-Guide-to-Avoiding-Program-Failure-Traps-While -Tuning-System-Performance/Pelphrey/p/book/9781482248418
"Articles on ERP project management on websites of professional organizations such as PMI (Project Management Institute) and Gartner." https://www.pmi.org/ https://www.gartner.com/en
The best way to gain knowledge about ERP project management is to combine different learning sources. It is important to adapt your learning plan to your needs and experience. It is recommended to start with the basics of project management and then delve into the specifics of implementing ERP systems. Practice is essential to gain experience in ERP project management. Kind regards.