"you should keep your receipts as documentation of your purchases" in German You should keep your receipts as documentation of your purchases. Du solltest die Rechnungen als Kaufnachweis aufbewahren/aufheben. Detailed translations for "you should keep your receipts as documentation of your purchases" You should keep your receipts as documentation of your purchases. You should keep your receipts as documentation of your purchases. Du solltest die Rechnungen als Kaufnachweis aufbewahren/aufheben.