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2.1.1.2 Error and status codes


   In OPC it is common to return arrays of HRESULTs corresponding to arrays of data. In the case where the data did not contain any errors an array with “no error occurred? codes still is returned. In DAIS such error codes will be returned as a sequence of error structs identifying the erroneous data and an error code. In case of no errors the sequence of error structs is empty.