@MathieuFZ You should not have been able to create a Rule with an invalid name (namely with an “@” symbol). I apologize for the inconvenience this may have caused. You are correct in that the Rule name cannot contain a “@” symbol. It can only contain alphanumeric characters, spaces and ‘-’ (but cannot start nor end with a ‘-’ or spaces). Could you please DM me your tenant name so that we can investigate further and get that Rule removed?