18.104.22.168.1 LongTermID Structure
A LongTermID structure is a Global Identifier structure, as specified in section 22.214.171.124, plus a 2-byte Pad field that has the value 0x0000. The total length of the LongTermID structure is 24 bytes.
LongTermID structures can be generated from the Message ID structure, as specified in section 126.96.36.199, or Folder ID structure, as specified in section 188.8.131.52, by using the RopLongTermIdFromIdROP ([MS-OXCROPS] section 184.108.40.206). Message ID structures and Folder ID structures can be generated from their associated LongTermID structures by using the RopIdFromLongTermId ROP ([MS-OXCROPS] section 220.127.116.11).