Make a Custom
Field required
Field level requirements
Field level requirements
This is the most restrictive of requirements, and
it requires the field to be entered all the time, regardless of how the record
is saved (i.e. through an integration, the API, mass upload, or through the
User Interface).
On the page layout
This option only makes the field required when the specific page layout that you set this requirement on is accessed. Therefore, you could technically make this
required for some users that use a particular page layout but not others.
NOTE: This requirement only applies when the record is edited on the User Interface.
NOTE: This requirement only applies when the record is edited on the User Interface.
Validation rule
requirement
The simplest validation rule to make
a custom field required looks like this:
ISBLANK(CUSTOM FIELD
API NAME)
Or, if the field is a Number or
Currency type field use this syntax:
ISNULL(CUSTOM FIELD API
NAME)