2.2.1.2 Message ID Structure

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A Message ID structure uniquely identifies a message in the context of a logon to a Store object. The Message ID structure is serialized compactly in the context of a ROP, such as the RopOpenMessage ROP ([MS-OXCROPS] section 2.2.6.1), where the Store object context is already established. It is an 8-byte structure.


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ReplicaId

GlobalCounter

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ReplicaId (2 bytes):  An unsigned integer identifying a Store object.

GlobalCounter (6 bytes):  An unsigned integer identifying the message within its Store object.