Explanation:

In Vlocity Cart (Salesforce Industries CPQ), to change the configuration of a line item, such as modifying its:

Attributes
Pricing adjustments
Time plan
Optional add-ons or bundles
—you should use the "Configure" option available in the Actions menu for the specific cart line item.

✅ Steps:
Open the Cart (Quote Line Editor).
Find the product line item you want to modify.
Click the Actions (⋮ or dropdown) menu for that line.
Select "Configure".

This reopens the configuration UI for that specific product, allowing you to change attributes, selections, etc.

❌ Why other options are incorrect:

A. Delete and re-add the product
🔸 This works but is inefficient and not required. You can reconfigure without deleting.

C. Update the product’s attribute in Vlocity Product Console
🔸 That changes the product definition, not the individual line item instance.

D. Invoke Field Mapper
🔸 Field Mapper is used for mapping field data, not for reconfiguring cart line items.