Warnings appear on the Create form when the rule type you are creating has a more guardrail compliant alternative. For example, use the report definition rule instead of the deprecated list view rule.
To add more warnings to this form, complete the following steps.
Create a field value that contains your custom warning.
Override the standard section @baseclass.pyRuleCreationWarning to reference your custom warning.
Specify the class of the rule type you are creating as the applies to key part of the section.
Override the @baseclass.pyRuleCreationWarning decision table to add the type of rule you are creating.
Refer to the section Rule-Obj-Activity.pyRuleCreationWarning as an example.
To extend the warning criteria evaluated on save of a rule, create a new message and override the @baseclass.CheckForCustomWarnings extension point.