Have you been told otherwise?
If you fall for a temptingly simplistic story that’s mainly or only about “loading” data then you’ll wildly underestimate the effort of data migration. It happens every day. Getting it right begins with understanding the touchpoints of repeatable process.
Consider the fundamental steps for data migration:
Any data migration solution must address all six steps to warrant the name. If you’re responsible for the outcome then you dare not do less.
Covering the scope of data migration steps requires looking beyond SAP S/4HANA Migrate Your Data (Migration Cockpit) — look beyond the Load step — for all but the simplest projects.