Universal Containers wants Technicians to view work progress through the Work Order Line Item card in the Salesforce Field Service mobile app. Which…

The requirement specifies a "Work Order Line Item card" to view "work progress," which implies a custom user interface element capable of summarizing or graphically representing the status of line items. A standard related list (Option C) only displays records in a list format. The most appropriate and powerful solution is to create a custom Lightning Component (specifically, a Lightning Web Component) that aggregates data from the Work Order Line Items to display progress (e.g., as a percentage or status bar). This component can then be exposed in the Field Service mobile app, providing technicians with a purpose-built, at-a-glance view directly within their workflow.

A. Create a custom Visuaiforce page and add an extemal link in the Salesforce Field Service mobile app to view the page in the mobile browser.

Visualforce is not the modern framework for the Field Service mobile UI, and launching an external browser link creates a disjointed, non-native user experience.

B. Create a Report Chart that summarizes wk Order Line Items andadd 2 link to the Service Appointment layout.

This solution navigates the user away from the primary record to a separate report, failing to provide an integrated "card" view within the context of the Work Order.

C. Add the Work Order Line Items related list to the Work Order page layout and assign the layout to the Technician’s profile.

This makes the line items visible but as a standard list of records. It does not create a specialized "card" that explicitly visualizes overall work progress as implied by the requirement.

1. Salesforce Field Service Developer Guide, "Lightning Web Components for Field Service": This section details the use of Lightning Web Components (LWCs) to create custom functionality and user interfaces within the Field Service mobile app. It states, "Create custom Lightning web components to customize the user interface and create your own functionality for the Field Service mobile app." This directly supports using a custom component for a specific UI need like a progress card.

2. Salesforce Help, "Add a Lightning Component to a Record Page": The process of making a custom component visible involves adding it to a Lightning record page. For the mobile app, this component would be added to the relevant page layout that is enabled for mobile, such as the Work Order page. The documentation outlines how custom components can be surfaced on record pages.

3. Trailhead, "Field Service Mobile App Customization", Unit: "Extend the App with Lightning Components": This module explicitly teaches how to build and deploy custom Lightning Web Components to enhance the Field Service mobile app's functionality, which aligns perfectly with the solution described in option D. It demonstrates that for requirements beyond standard layouts, custom components are the sanctioned approach.