Which two items are appropriate content for custom logs implementing checkout?

When implementing custom logs during the checkout process, it's essential to capture data that is useful for troubleshooting, monitoring, and optimizing the checkout flow while ensuring user privacy and compliance with data protection regulations.

Capturing payment gateway service response codes is an appropriate logging practice because these codes provide critical insights into the payment processing lifecycle. They can indicate whether a transaction was approved, declined, or requires further action. This information can be invaluable for developers to understand issues that may arise with payment processing and for ensuring that the checkout system is functioning as intended.

In contrast, logging sensitive information such as a customer's password, order failure details, or credit card information is not considered appropriate. User passwords should never be logged to safeguard user security and privacy. Similarly, although order failure information itself can be useful, it typically should not involve sensitive customer data or transaction details that could compromise privacy and security. Finally, credit card information falls under strict regulatory requirements like PCI Compliance, which prohibits such data from being logged for security reasons.

By focusing on log entries that help maintain the security and efficiency of the checkout process without compromising sensitive information, you can ensure that your implementations align with best practices and regulatory standards.