3.1.5.10 Sending a RopOpenAttachment ROP Request

When sending a RopOpenAttachment ROP request ([MS-OXCROPS] section 2.2.6.12) 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 3.1.4.17.

The client uses the opened Attachment object in subsequent ROPs. It eventually sends a RopRelease ROP request ([MS-OXCROPS] section 2.2.15.3) on the Attachment object and, after doing so, MUST NOT use the Attachment object for any subsequent ROPs.