When a field is marked as "Required" in the Object Manager, it becomes universally required at the data model level. This means a value must be provided for this field whenever a record is created or updated, regardless of the user's profile or the method used (e.g., user interface, API, Data Loader). To ensure users can always populate the field, Salesforce automatically adds it to the bottom of the first section on all page layouts for that object where it is not already present.

A. The field is not required to save records via the API on that object.

This is incorrect. A universally required field enforces the requirement at the database level, meaning it is mandatory for all data entry points, including the API.

D. The field is optional when saving records via web-to-lead and web-to-case.

This is incorrect. Web-to-lead and web-to-case are methods of record creation. If a universally required field is not populated by the web form, the record creation will fail.

1. Salesforce Help Documentation

"Custom Field Attributes":

Under the "Required" attribute description

it states: "Requires that users enter a value for the custom field when they create or edit a record... Making a field required at the field level (universally required) means that... The field is required for all users

regardless of their profile... The field is automatically added to all page layouts." This directly supports answers B and C.

2. Salesforce Help Documentation

"Set Field-Level Security

Page Layouts

and Required Fields":

This document clarifies the difference between page layout requirements and universal requirements. It notes that a universally required field "must have a value to save a record in the user interface

the Force.com API

and so on." This confirms that the requirement applies via the API

invalidating option A.

3. Trailhead

Salesforce Platform Basics

"Data Modeling" Module

"Understand Custom & Standard Objects" Unit:

This module explains object and field customization. In the section on field properties

it details that the "Required" checkbox on the field definition makes it "universally required

" which is enforced across all interfaces

including API calls and automated processes like Web-to-Lead

which contradicts option D.