Sending a RopOpenAttachment ROP Request

When sending a RopOpenAttachment ROP request ([MS-OXCROPS] section to open an attachment, the client MUST use a valid value for the AttachmentID field. For more information about opening an Embedded Message object, see section

The client uses the opened Attachment object in subsequent ROPs. It eventually sends a RopRelease ROP request ([MS-OXCROPS] section on the Attachment object and, after doing so, MUST NOT use the Attachment object for any subsequent ROPs.