When a transaction takes place, we ensure that you have sufficient money in your bank account to cover all pending AAdvantage® Debit Card transactions, to ensure you remain within your bank limits.
So, for instance, if you are doing a £20 transaction, and have £90 of uncleared AAdvantage® Debit Card transactions, we will check to make sure you have £110 in your bank account. If you have more than £110 your transaction will go through, otherwise it will be rejected for insufficient funds.
You can see the status of your transaction, and all pending payments, in the AAdvantage® Debit Card app.