updates

An array of RuleGroupUpdate objects that you want to insert into or delete from a RuleGroup.

You can only insert REGULAR rules into a rule group.

ActivatedRule|OverrideAction applies only when updating or adding a RuleGroup to a WebACL. In this case you do not use ActivatedRule|Action. For all other update requests, ActivatedRule|Action is used instead of ActivatedRule|OverrideAction.