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Square Transaction failed due to expired card.

The card used for the transaction has expired.

Understanding Square's Payment Gateway

Square is a leading FinTech company that provides a comprehensive payment gateway solution for businesses of all sizes. It allows merchants to accept payments via credit and debit cards, manage transactions, and streamline their checkout processes. Square's APIs are designed to integrate seamlessly with various applications, providing a robust platform for handling financial transactions securely and efficiently.

Identifying the Symptom: CARD_EXPIRED

One common issue developers encounter when using Square's payment gateway is the CARD_EXPIRED error. This error typically manifests as a failed transaction, where the payment cannot be processed due to the expiration of the card used by the customer. Users might see an error message indicating that the card is no longer valid.

Exploring the Issue: Why Does CARD_EXPIRED Occur?

The CARD_EXPIRED error occurs when a customer attempts to make a payment using a card that has passed its expiration date. Credit and debit cards have a limited validity period, and once this period lapses, the card is no longer usable for transactions. This is a common issue that can disrupt the payment process if not handled properly.

Technical Explanation

When a transaction is initiated, Square's API checks the card details, including the expiration date. If the date is in the past, the API returns the CARD_EXPIRED error, preventing the transaction from proceeding. This is a security measure to ensure that only valid cards are used for payments.

Steps to Resolve the CARD_EXPIRED Issue

To resolve the CARD_EXPIRED error, follow these steps:

Step 1: Inform the Customer

Communicate with the customer to inform them that their card has expired. You can provide a user-friendly message on your application interface, prompting them to update their card details.

Step 2: Request Updated Card Information

Ask the customer to provide a new card with a valid expiration date. Ensure that your application has a secure method for collecting and storing card information. For more information on handling card data securely, refer to Square's Security Best Practices.

Step 3: Update the Card Details

Once the customer provides a new card, update their payment information in your system. Use Square's API to securely store the new card details. You can find detailed instructions on updating card information in the Square Payments API Documentation.

Step 4: Retry the Transaction

After updating the card details, attempt to process the transaction again. Ensure that the new card is valid and has sufficient funds. If the transaction is successful, confirm the payment with the customer.

Conclusion

Handling the CARD_EXPIRED error effectively ensures a smooth payment experience for your customers. By keeping your application updated with valid card information and following security best practices, you can minimize disruptions and maintain customer satisfaction. For further assistance, visit Square's Developer Portal.

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Square Transaction failed due to expired card.

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