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Define Validation Rules

Validation rules verify that the data a user enters in a record meets the standards you specify before the user can save the record. A validation rule can contain a formula or expression that evaluates the data in one or more fields and returns a value of “True” or “False”. Validation rules also include an error message to display to the user when the rule returns a value of “True” due to an invalid value.

Required Editions

Available in: both Salesforce Classic and Lightning Experience
Available in: Essentials, Contact Manager, Group, Professional, Enterprise, Performance, Unlimited, Developer, and Database.com Editions
User Permissions Needed
To view field validation rules: View Setup and Configuration
To define or change field validation rules: Customize Application

Before creating validation rules, review the Validation Rule Considerations.

  1. From the management settings for the relevant object, go to Validation Rules.
  2. In the Validation Rules related list, click New.
    Note
    Note The detail page of a custom activity field does not list associated validation rules. To edit the validation rule for a custom activity field, select the validation rule from Setup by entering Activities in the Quick Find box, then selecting Activities and choose Task Validation Rules or Event Validation Rules.
  3. Enter the properties of your validation rule.
  4. To check your formula for errors, click Check Syntax.

See Also