When you attempt to make a transaction of a credit/debit card a shadow is made on the card for that amount which lasts 3-4 days depending on the card issuing bank. To have a shadow cleared, the shopper must ask their card issuer to clear the shadow.
So, for example, if a credit / debit card transaction fails 3 times on a website, perhaps you put the wrong address details into the website, 3 shadows are created on the card. If the 3rd failed transaction takes you to your credit limit, any further transactions will be declined until the shadows clear, even if you are now using the correct address details.
So, for example, if a credit / debit card transaction fails 3 times on a website, perhaps you put the wrong address details into the website, 3 shadows are created on the card. If the 3rd failed transaction takes you to your credit limit, any further transactions will be declined until the shadows clear, even if you are now using the correct address details.