Anyone who processes personal data must ensure that it is accurate (Art. 6 para. 5 and Art. 32 para. 1, 3 and 4 FADP). They must take all reasonable measures to ensure that data which is inaccurate or incomplete in relation to the purpose for which it was collected or processed is corrected or destroyed. Any data subject may request that inaccurate data be corrected. What this means in practice is illustrated by a decision of the Federal Administrative Court in the case of moneyhouse.ch (commented on the blog juristenfutter.ch: https://wp.me/p8RKnD-2s). In this case, the court in particular held, that Moneyhouse is obliged based on the principle of integrity to regularly check its data stock for accuracy.