If a direct debit fails or no payment is received, online merchants are informed via notification tools.
If desired, these notification tools can also be used to inform customers about specific events. This makes sense, for example, if a direct debit is to be announced so that the customer can ensure sufficient coverage. In the case of unlimited credit card subscriptions, the customer can also be informed in this way when the term of the credit card is approaching its end and he has to deposit a new credit card.