Salesforce Validation Rules - Keep your Data Clean
Watch this short video for just over 2 minutes and learn how to keep your Salesforce data clean? The answer is simple: Use field validation rules.
Validation rules in Salesforce contain a formula or expressions that evaluate the data in one or more fields in a record to meet the standards and return a value “True” or “False”. Validation rules display an error message to the user when the Condition is “False”.