Constraints rules - Completing the New or Save As form

A constraints rule has two key parts.

Field	Description
Type	Select `Constraints` from the `Decision` category.
Applies To	Select a class for this rule. At runtime, a clipboard page of this class must be a top-level page. The properties to be constrained may be in this class (or in the class of an embedded page). You cannot use a Rule-Declare-* class or any ancestor of the Rule-Declare- class (including @baseclass) here. You cannot use a class derived from the Code- or Embed- class here.
Purpose	Enter a name for this constraint, unique within the Applies To class. Begin the name with a letter and use only alphanumeric, ampersand, and dash characters. No other rules explicitly reference this Purpose value. However, because of normal class inheritance, a constraints rule named MaximumLimit at one level in the class structure may override (and so prevent execution of) a constraints rule named MaximumLimit at a higher level in the class structure.

For general information on the New form, see Completing the new rule dialog box. For general information on the Save As form, see How to enter rule keys using Save As.

When searching for constraints rules, the system:

Filters candidate rules based on a requestor's RuleSet list of RuleSets and versions
Searches through ancestor classes in the class hierarchy for candidates when no matching rule is found in the starting class

Constraints rules Completing the New or Save As form