Nearly all Repository methods return an HRESULT value that indicates whether or not the method succeeded in performing its function. The facility field of these HRESULT values is always set to FACILITY_ITF, which indicates that the meaning for any given error code value is specific to the interface from which the error is being reported. All of the standard Repository interfaces (that is, interfaces that are automatically supplied with the Repository) use the same set of error codes. These codes are listed in numerical order, and in alphabetical order.