Which method is commonly used to make a form field read-only in a standard ServiceNow configuration?

Which method is commonly used to make a form field read-only in a standard ServiceNow configuration?

• A. UI Policy
• B. Client Script
• C. UI Action
• D. Field Attribute

Answer: (A)

Controlling when a field is read-only on a form is commonly done with UI Policies in ServiceNow. A UI Policy lets you specify a condition and then set the Read Only property for a field when that condition is met. This is a standard, client-side mechanism that automatically applies on form load and whenever relevant fields change, without writing any code. It keeps behavior predictable and easy to maintain, especially for straightforward access rules. While a Client Script could also make a field read-only by using something like g_form.setReadOnly, that approach requires custom scripting and can be harder to manage or conflict with UI Policies. UI Actions are for buttons or other user-triggered operations, not for controlling field states. Field Attributes are metadata about the field and don’t provide the straightforward, condition-driven control over read-only behavior that UI Policies offer.

Controlling when a field is read-only on a form is commonly done with UI Policies in ServiceNow. A UI Policy lets you specify a condition and then set the Read Only property for a field when that condition is met. This is a standard, client-side mechanism that automatically applies on form load and whenever relevant fields change, without writing any code. It keeps behavior predictable and easy to maintain, especially for straightforward access rules.

While a Client Script could also make a field read-only by using something like g_form.setReadOnly, that approach requires custom scripting and can be harder to manage or conflict with UI Policies. UI Actions are for buttons or other user-triggered operations, not for controlling field states. Field Attributes are metadata about the field and don’t provide the straightforward, condition-driven control over read-only behavior that UI Policies offer.