2.2.3.1 RopOpenMessage ROP
The RopOpenMessage ROP ([MS-OXCROPS] section 2.2.6.1) provides access to an existing Message object, which is identified by the message ID (MID), whose structure is specified in [MS-OXCDATA] section 2.2.1.2.<11> The folder containing the Message object is identified by the folder ID (FID), whose structure is specified in [MS-OXCDATA] section 2.2.1.1.
For this ROP, the value of the InputHandleIndex field references either a Store object or a Folder object. If a folder is used, it is not necessary that it is the parent folder, only that it is a folder within the same message store. The value of the OutputHandleIndex field references a Message object.
The complete syntax of the ROP request and response buffers for this ROP is specified in [MS-OXCROPS]. This section specifies the syntax and semantics of various fields that are not fully specified in [MS-OXCROPS].