2.2.1.3.1.1 PidTagRuleId Property
Type: PtypInteger64 ([MS-OXCDATA] section 2.11.1)
The PidTagRuleId property ([MS-OXPROPS] section 2.950) specifies a unique identifier the messaging server generates for each rule (2) when the rule (2) is first created. The PidTagRuleId property MUST NOT be used when requesting that a new rule (2) be created but MUST be used when requesting that a rule (2) be modified or deleted.