Explanation:

In a task-oriented CommonJS job step, you control the exit status using the dw.system.Status class. This allows you to:

Indicate whether the step succeeded or failed

Provide a custom status code (like "NO_FILES_FOUND")

Optionally include a message

✅ Correct Implementation:

var Status = require('dw/system/Status');
return new Status(Status.OK, 'NO_FILES_FOUND');

This tells the job framework:

The step completed successfully (Status.OK)

The custom status code is "NO_FILES_FOUND" — which can be referenced in the steptypes.json file

❌ Why the other options are incorrect

A & B (object literal with success and Message) These are not valid return types for job steps. The framework expects a Status object.

C. this.status = 'NO_FILES_FOUND' this is not used for returning status in job steps.

D. return 'NO_FILES_FOUND' Returning a string does not provide the structured status object required by the job framework.

Explanation:

Why Option A?

Correct Logger Initialization: Uses Logger.getLogger("contact") to create a category-specific logger (aligns with the requirement for "contact" script logging).

Proper Debug Level: Uses .debug() to log the service response (matches the "debug logging" requirement).

Accurate Message: Logs the expected success message ("OK" instead of typo "CK" in other options).

Why Not Other Options?

B: Logger.debug() is invalid—must use Logger.getLogger() first.
C: Logger.customLogger() is not a valid method in B2C Commerce.

Key Requirements Met:
Custom category ("contact").
Debug-level logging.
Valid syntax for SFCC’s Logger API.

Reference:
Salesforce B2C Commerce Logger Documentation

Explanation:

For custom debug statements to appear in the Storefront Toolkit Request Log, the developer must:

Activate the Logging Category at DEBUG Level:

Navigate to Business Manager > Administration > Logging > Custom Log Settings.

Locate the specific logging category used in the script (e.g., my.custom.category).

Set the Log Level to DEBUG (or lower, e.g., INFO, ERROR).

Example code with logging category:

var log = Logger.getLogger('my.custom.category'); log.debug('Debug message'); // Will now appear in Request Log

Why Option D?

The Request Log only displays messages if:

The logging category is active.
The log level (e.g., DEBUG) matches or is lower than the configured level.

Why Not Other Options?

A/B (Global/Site Preferences):
There is no "Enable custom logging in Request Log" checkbox in preferences.

C (Select Log Levels Written to Files):
Controls log file output, not the Request Log in Storefront Toolkit.

Explanation:

In Salesforce B2C Commerce, when you have multiple sites (e.g., U.S. and Europe) sharing the same product catalog, but needing site-specific display logic — such as different certification logos — the best practice is to use site-specific custom attributes on the Product system object.

This allows each site to:

Define its own value for the same attribute (e.g., certificationLogo)
Display the appropriate logo on the product detail page based on the current site context
Avoid duplicating products or catalogs unnecessarily

Key characteristics of site-specific attributes:

They override the global value for a specific site
They are non-localizable (localizable attributes are for language/locale differences)
They are ideal for regional compliance, merchandising, or visibility rules

🔧 Example Implementation

Create a custom attribute on the Product system object:
ID: certificationLogo
Type: Image or String (URL to image)
Mark it as site-specific

Assign site-specific values in Business Manager:
For U.S. site: certificationLogo = /images/certA.png
For EU site: certificationLogo = /images/certB.png

Render in ISML:
< isif condition = " $ { pdict. Product. custom. certificationLogo } " >
< img src = " $ { pdict. Product. custom. certificationLogo } " alt = " Certification Logo " >
< / isif >

❌ Why the other options are incorrect

A. Localizable custom attribute on Certificate system object
Localizable attributes are for language differences, not site-specific logic. Also, Certificate isn’t a standard system object unless custom-defined.

B. Image custom preference on SitePreference Site preferences are global to the site, not tied to individual products.

D. Localizable custom preference on SitePreference Again, this is for localization, not product-specific logic.

Explanation:

In Salesforce B2C Commerce, the require() method is the correct way to implement lazy loading of scripts. This allows you to load a module only when it's actually needed during execution.

How require() Supports Lazy Loading:
- require() loads a script only when the line is executed.
- Improves controller performance by avoiding loading unused modules during initial execution.
- Can be placed inside route handlers or functions to defer loading.

Example:
server.get('Show', function (req, res, next) {
    var basketHelper = require('*/cartridge/scripts/helpers/basketHelper');
    basketHelper.processBasket();
    next();
});

Why Other Options Are Incorrect:
A. importPackage() – This is for the old Rhino engine and is not supported in CommonJS-based environments like SFCC.
B. $.ajax() – This is a client-side method for sending HTTP requests using jQuery; it has nothing to do with server-side script loading.
C. local include – This is used in ISML templates to include HTML markup or partials, not JavaScript modules.

Best Practice:
Use require() inside route callbacks or functions to load only what is needed, improving performance and reducing memory usage.