1.8 Vendor-Extensible Fields

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The Virtual Disk Service Remote Protocol does not define any vendor-extensible fields.

Unless otherwise specified, all methods MUST return zero or a non-error HRESULT (as specified in [MS-ERREF]) to indicate success or return an implementation-specific nonzero error code to indicate failure. For the HRESULT values predefined by the Virtual Disk Service Remote Protocol, see section 2.2.3.

The Virtual Disk Service Remote Protocol uses HRESULTs, which are vendor-extensible. Vendors are free to choose their own values for HRESULTs; however, the C bit (0x20000000) MUST be set as specified in [MS-ERREF] to indicate that it is a customer code.