Search in Google for S/4HANA <your target version> simplification list and you will find a document that is a good starting point.
Alternatively, you can use the Simplification Item Catalog (S-user required for logon). This one is better compared to a PDF, because you can filter by application area.
You can also read some blogs with tag SAP S/4HANA.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.