To validate a property or a page means to check its value against certain rules, and add a message to the property or page if validation fails. An invalid page (a page that has any associated messages) usually cannot be stored into the database.

A validaterule is an instance of the Rule-Obj-Validate rule type. These rules test property values, typically immediately after they are submitted on a browser form.

Activities use the Obj-Validate method to call a validate rule to test a set of property values. Object validation is optional and occurs only when explicitly designed into your application. Object validation can enforce restrictions on values beyond those in the property rules.

When a workstation user submits an HTML form to the Process Commander server, existing page messages corresponding to the input are cleared, and property messages are cleared for any value that changed.

A custom activity can also check values on a clipboard page. A custom activity is necessary if the needed tests are more complex than can be recorded in a validate rule. Informally, activities created for this purpose are called validation activities.

A validation rule may reference edit validate rules (Rule-Edit-Validate rule type).

	client-side format validation, message, property validation, type
	About Validate rules About Edit Validate rules About the Clipboard tool Validating user input — Concepts and terms
	Atlas — Standard validate rules

Definitions — V