This rule belongs to the
custom-ruleset-validation ruleset and states that:
The id specified in the rule definition using the
Id property must be unique among all rules defined in the current ruleset document.
|Duplicate custom rule
- Ensure that the
Idassigned to the rule is unique among ids of all rules defined in the current ruleset document.
- Ids are compared in a case-sensitive manner.
- Make sure that the rule id is not null or empty.