LV1_INVALID_CLASS_ID            = -21,
        LV1_CONSTRAINT_NOT_SATISFIED    = -22,
        LV1_ALIGNMENT_ERROR             = -23,
+       LV1_HARDWARE_ERROR              = -24,
+       LV1_INVALID_DATA_FORMAT         = -25,
+       LV1_INVALID_OPERATION           = -26,
        LV1_INTERNAL_ERROR              = -32768,
 };
 
                return "LV1_CONSTRAINT_NOT_SATISFIED (-22)";
        case LV1_ALIGNMENT_ERROR:
                return "LV1_ALIGNMENT_ERROR (-23)";
+       case LV1_HARDWARE_ERROR:
+               return "LV1_HARDWARE_ERROR (-24)";
+       case LV1_INVALID_DATA_FORMAT:
+               return "LV1_INVALID_DATA_FORMAT (-25)";
+       case LV1_INVALID_OPERATION:
+               return "LV1_INVALID_OPERATION (-26)";
        case LV1_INTERNAL_ERROR:
                return "LV1_INTERNAL_ERROR (-32768)";
        default: