A payment gatewayresponse/status codeis appropriate operational information for a checkout log because it can help diagnose authorization failures, processor errors, configuration problems, and transient integration issues without necessarily revealing sensitive payment credentials.

Passwords and credit-card information must not be placed into application logs. These values are highly sensitive and create substantial security and compliance exposure if persisted in WebDAV-accessible or Business Manager-accessible diagnostic files. B2C Commerce logging and service-integration practices require developers to keep sensitive shopper and payment information out of diagnostic output.

The correct pattern is to log identifiers and operational state sufficient to diagnose a failure—for example, a sanitized processor result code, service status, order-processing error identifier, or non-sensitive correlation ID—rather than the shopper ' s authentication secrets or raw payment details.

Salesforce ' s Service Framework guidance also supports filtering service logging so that sensitive information is excluded from request/response diagnostics.

Thus, option A provides useful diagnostic information while maintaining the appropriate security boundary.

Study Guide reference:Application Development — secure custom logging, checkout diagnostics, Service Framework logging, PCI-sensitive information, and credential protection.

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