Validation rules

I bet you already know what a validation rule is, but let's discuss them again. A validation rule is a feature that is used to improve data quality. It is checked before a record is saved in the database.

They are defined by the following:

• A name
• An Active flag
• A condition (formula) that should trigger the error (a chain of conditions on fields of the object or related objects that triggers an error if evaluated as true)
• An error message that is displayed to the user
• A place where the error can be displayed

Here is an example of a validation rule:

Example of a simple validation rule

This validation rule prevents a user from inserting a negative value in the Invoice Amount field:

Validation rule triggers if its conditions are met

Some of its configuration fields are easy to understand:

• Error Message: Error displayed to the user if a condition is met.
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