When making an online payment, the transaction undergoes a careful analysis to minimize fraud risks and ensure that processing takes place without errors.

In this documentation, you will find information about what causes a payment to be declined and some recommendations to prevent this from happening.

A payment may be declined due to an issue with the payment method or because it does not meet the necessary security requirements. For example, if the card does not have enough amount or if there is a strange movement of the account.

Payment refusal is a reality in the world of online sales and can happen for several reasons: incorrect filling of information by the customer, attempted fraud, problem in communication between acquirers, among many other issues.

To prevent a legitimate payment from being refused because it does not meet security validations, it is necessary to include all possible information when carrying out the transaction. Furthermore, you must pay attention to some security requirements, such as our Security Code and Device ID.

The Device ID is an important piece of information to ensure better security and, consequently, a better payment approval rate. It's a unique number that's used to identify a customer's device when they are buying.

If a customer makes a purchase on a different device than usual, this may mean that the purchase was fake and should not be done.

Check if the store is sending this information and if not, make sure to activate this feature.