Travel Ban on Entry into Turkey: How to Revoke Entry Ban

If you have an entry ban to Turkey, you must learn the reason and then appeal the ban decision to revoke the ban.
The Consequences of Overstaying 90-Days limit in the European Union

Overstaying 90 days in the EU may lead to fines, entry bans, and deportation. Future visa approvals can be affected, and re-entry restrictions may apply across the Schengen Area.