Which of these is required to ensure items are updated in the Guided Selling cart?

In the context of Salesforce Industries CPQ's Guided Selling, ensuring items are updated in the cart typically involves interaction with the cart's API, particularly using methods like putCartItems. This API method is crucial for updating existing cart items with new or altered information as part of the guided selling process, enabling dynamic updates to the cart contents based on user selections or system-driven recommendations.