A dependent lookup is a relationship field with a lookup filter that references fields
on the source object. For example, you can configure the case Contact field to only show
contacts associated with the account selected in the case Account Name field.
Required Editions
Important Where possible, we changed noninclusive terms to align with our company
value of Equality. We maintained certain terms to avoid any effect on customer
implementations.
Available in: both Salesforce Classic
and Lightning Experience
Available in: All Editions except for Database.com.
User Permissions
Needed
To manage dependent lookups:
Customize Application
When a user changes the value of a referenced field on the source object, Salesforce
immediately verifies that the value in the dependent lookup still meets the lookup filter
criteria. If the value doesn't meet the criteria, an error message is displayed and users
can't save the record until the value is valid.
If the referenced field on the source object is a lookup, master-detail, or hierarchy field,
users can't change its value by typing. Instead, users must click the lookup icon and select a
value in the lookup search dialog.
Tip Dependent lookups are supported in Visualforce pages.
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