Duplicate transaction

• Network latency or delays: Issues in network or server communication could result in a resending of the transaction request.

• Payer actions: A payer might inadvertently submit the payment information multiple times, such as by clicking the payment button more than once.

• Server error: The client-side application did not receive a response and retried the transaction.

Customer dissatisfaction: Needing to perform additional steps to confirm the transaction status, or being unsure whether the transaction succeeded, can lead to customer confusion or frustration.

• Check transaction status: Verify whether the original transaction succeeded by checking the transaction history in your PayPal account or through the API.

• Implement idempotency: Use unique identifiers, such as an idempotency key, for each transaction request to ensure that retries do not result in duplicate transactions.

• Improve user feedback: Provide clear feedback to payers about their transaction status to prevent them from resubmitting the payment.

• Implement error handling: Implement error handling and network retry logic to manage connectivity issues without resubmitting identical requests.