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--><h1 id="status-codes" tabindex="-1"><a class="header-anchor" href="#status-codes" aria-hidden="true">#</a> Status Codes</h1><p><strong>Status Code</strong> is introduced in the latest version. A sample solution as IoTDB requires registering the time series first before writing data is:</p><div class="language-text line-numbers-mode" data-ext="text"><pre class="language-text"><code>try {
    writeData();
} catch (SQLException e) {
  // the most case is that the time series does not exist
  if (e.getMessage().contains(&quot;exist&quot;)) {
      //However, using the content of the error message is not so efficient
      registerTimeSeries();
      //write data once again
      writeData();
  }
}

</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>With Status Code, instead of writing codes like <code>if (e.getErrorMessage().contains(&quot;exist&quot;))</code>, we can simply use <code>e.getErrorCode() == TSStatusCode.TIME_SERIES_NOT_EXIST_ERROR.getStatusCode()</code>.</p><p>Here is a list of Status Code and related message:</p><table><thead><tr><th style="text-align:left;">Status Code</th><th style="text-align:left;">Status Type</th><th style="text-align:left;">Meanings</th></tr></thead><tbody><tr><td style="text-align:left;">200</td><td style="text-align:left;">SUCCESS_STATUS</td><td style="text-align:left;"></td></tr><tr><td style="text-align:left;">201</td><td style="text-align:left;">STILL_EXECUTING_STATUS</td><td style="text-align:left;"></td></tr><tr><td style="text-align:left;">202</td><td style="text-align:left;">INVALID_HANDLE_STATUS</td><td style="text-align:left;"></td></tr><tr><td style="text-align:left;">203</td><td style="text-align:left;">INCOMPATIBLE_VERSION</td><td style="text-align:left;">Incompatible version</td></tr><tr><td style="text-align:left;">298</td><td style="text-align:left;">NODE_DELETE_FAILED_ERROR</td><td style="text-align:left;">Failed while deleting node</td></tr><tr><td style="text-align:left;">299</td><td style="text-align:left;">ALIAS_ALREADY_EXIST_ERROR</td><td style="text-align:left;">Alias already exists</td></tr><tr><td style="text-align:left;">300</td><td style="text-align:left;">PATH_ALREADY_EXIST_ERROR</td><td style="text-align:left;">Path already exists</td></tr><tr><td style="text-align:left;">301</td><td style="text-align:left;">PATH_NOT_EXIST_ERROR</td><td style="text-align:left;">Path does not exist</td></tr><tr><td style="text-align:left;">302</td><td style="text-align:left;">UNSUPPORTED_FETCH_METADATA_OPERATION_ERROR</td><td style="text-align:left;">Unsupported fetch metadata operation</td></tr><tr><td style="text-align:left;">303</td><td style="text-align:left;">METADATA_ERROR</td><td style="text-align:left;">Meet error when dealing with metadata</td></tr><tr><td style="text-align:left;">305</td><td style="text-align:left;">OUT_OF_TTL_ERROR</td><td style="text-align:left;">Insertion time is less than TTL time bound</td></tr><tr><td style="text-align:left;">306</td><td style="text-align:left;">CONFIG_ADJUSTER</td><td style="text-align:left;">IoTDB system load is too large</td></tr><tr><td style="text-align:left;">307</td><td style="text-align:left;">MERGE_ERROR</td><td style="text-align:left;">Meet error while merging</td></tr><tr><td style="text-align:left;">308</td><td style="text-align:left;">SYSTEM_CHECK_ERROR</td><td style="text-align:left;">Meet error while system checking</td></tr><tr><td style="text-align:left;">309</td><td style="text-align:left;">SYNC_DEVICE_OWNER_CONFLICT_ERROR</td><td style="text-align:left;">Sync device owners conflict</td></tr><tr><td style="text-align:left;">310</td><td style="text-align:left;">SYNC_CONNECTION_EXCEPTION</td><td style="text-align:left;">Meet error while sync connecting</td></tr><tr><td style="text-align:left;">311</td><td style="text-align:left;">STORAGE_GROUP_PROCESSOR_ERROR</td><td style="text-align:left;">Storage group processor related error</td></tr><tr><td style="text-align:left;">312</td><td style="text-align:left;">STORAGE_GROUP_ERROR</td><td style="text-align:left;">Storage group related error</td></tr><tr><td style="text-align:left;">313</td><td style="text-align:left;">STORAGE_ENGINE_ERROR</td><td style="text-align:left;">Storage engine related error</td></tr><tr><td style="text-align:left;">314</td><td style="text-align:left;">TSFILE_PROCESSOR_ERROR</td><td style="text-align:left;">TsFile processor related error</td></tr><tr><td style="text-align:left;">315</td><td style="text-align:left;">PATH_ILLEGAL</td><td style="text-align:left;">Illegal path</td></tr><tr><td style="text-align:left;">316</td><td style="text-align:left;">LOAD_FILE_ERROR</td><td style="text-align:left;">Meet error while loading file</td></tr><tr><td style="text-align:left;">317</td><td style="text-align:left;">STORAGE_GROUP_NOT_READY</td><td style="text-align:left;">The storage group is in recovery mode, not ready fore accepting read/write operation</td></tr><tr><td style="text-align:left;">400</td><td style="text-align:left;">EXECUTE_STATEMENT_ERROR</td><td style="text-align:left;">Execute statement error</td></tr><tr><td style="text-align:left;">401</td><td style="text-align:left;">SQL_PARSE_ERROR</td><td style="text-align:left;">Meet error while parsing SQL</td></tr><tr><td style="text-align:left;">402</td><td style="text-align:left;">GENERATE_TIME_ZONE_ERROR</td><td style="text-align:left;">Meet error while generating time zone</td></tr><tr><td style="text-align:left;">403</td><td style="text-align:left;">SET_TIME_ZONE_ERROR</td><td style="text-align:left;">Meet error while setting time zone</td></tr><tr><td style="text-align:left;">404</td><td style="text-align:left;">NOT_STORAGE_GROUP_ERROR</td><td style="text-align:left;">Operating object is not a storage group</td></tr><tr><td style="text-align:left;">405</td><td style="text-align:left;">QUERY_NOT_ALLOWED</td><td style="text-align:left;">Query statements are not allowed error</td></tr><tr><td style="text-align:left;">406</td><td style="text-align:left;">AST_FORMAT_ERROR</td><td style="text-align:left;">AST format related error</td></tr><tr><td style="text-align:left;">407</td><td style="text-align:left;">LOGICAL_OPERATOR_ERROR</td><td style="text-align:left;">Logical operator related error</td></tr><tr><td style="text-align:left;">408</td><td style="text-align:left;">LOGICAL_OPTIMIZE_ERROR</td><td style="text-align:left;">Logical optimize related error</td></tr><tr><td style="text-align:left;">409</td><td style="text-align:left;">UNSUPPORTED_FILL_TYPE_ERROR</td><td style="text-align:left;">Unsupported fill type related error</td></tr><tr><td style="text-align:left;">410</td><td style="text-align:left;">PATH_ERROR</td><td style="text-align:left;">Path related error</td></tr><tr><td style="text-align:left;">411</td><td style="text-align:left;">QUERY_PROCESS_ERROR</td><td style="text-align:left;">Query process related error</td></tr><tr><td style="text-align:left;">412</td><td style="text-align:left;">WRITE_PROCESS_ERROR</td><td style="text-align:left;">Writing data related error</td></tr><tr><td style="text-align:left;">413</td><td style="text-align:left;">WRITE_PROCESS_REJECT</td><td style="text-align:left;">Writing data rejected error</td></tr><tr><td style="text-align:left;">414</td><td style="text-align:left;">QUERY_ID_NOT_EXIST</td><td style="text-align:left;">Kill query with non existent queryId</td></tr><tr><td style="text-align:left;">500</td><td style="text-align:left;">INTERNAL_SERVER_ERROR</td><td style="text-align:left;">Internal server error</td></tr><tr><td style="text-align:left;">501</td><td style="text-align:left;">CLOSE_OPERATION_ERROR</td><td style="text-align:left;">Meet error in close operation</td></tr><tr><td style="text-align:left;">502</td><td style="text-align:left;">READ_ONLY_SYSTEM_ERROR</td><td style="text-align:left;">Operating system is read only</td></tr><tr><td style="text-align:left;">503</td><td style="text-align:left;">DISK_SPACE_INSUFFICIENT_ERROR</td><td style="text-align:left;">Disk space is insufficient</td></tr><tr><td style="text-align:left;">504</td><td style="text-align:left;">START_UP_ERROR</td><td style="text-align:left;">Meet error while starting up</td></tr><tr><td style="text-align:left;">505</td><td style="text-align:left;">SHUT_DOWN_ERROR</td><td style="text-align:left;">Meet error while shutdown</td></tr><tr><td style="text-align:left;">506</td><td style="text-align:left;">MULTIPLE_ERROR</td><td style="text-align:left;">Meet error when executing multiple statements</td></tr><tr><td style="text-align:left;">600</td><td style="text-align:left;">WRONG_LOGIN_PASSWORD_ERROR</td><td style="text-align:left;">Username or password is wrong</td></tr><tr><td style="text-align:left;">601</td><td style="text-align:left;">NOT_LOGIN_ERROR</td><td style="text-align:left;">Has not logged in</td></tr><tr><td style="text-align:left;">602</td><td style="text-align:left;">NO_PERMISSION_ERROR</td><td style="text-align:left;">No permissions for this operation, please add privilege</td></tr><tr><td style="text-align:left;">603</td><td style="text-align:left;">UNINITIALIZED_AUTH_ERROR</td><td style="text-align:left;">Uninitialized authorizer</td></tr><tr><td style="text-align:left;">700</td><td style="text-align:left;">PARTITION_NOT_READY</td><td style="text-align:left;">Partition table not ready</td></tr><tr><td style="text-align:left;">701</td><td style="text-align:left;">TIME_OUT</td><td style="text-align:left;">Operation timeout</td></tr><tr><td style="text-align:left;">702</td><td style="text-align:left;">NO_LEADER</td><td style="text-align:left;">No leader</td></tr><tr><td style="text-align:left;">703</td><td style="text-align:left;">UNSUPPORTED_OPERATION</td><td style="text-align:left;">Unsupported operation</td></tr><tr><td style="text-align:left;">704</td><td style="text-align:left;">NODE_READ_ONLY</td><td style="text-align:left;">Node read only</td></tr><tr><td style="text-align:left;">705</td><td style="text-align:left;">CONSISTENCY_FAILURE</td><td style="text-align:left;">Consistency check failure</td></tr><tr><td style="text-align:left;">706</td><td style="text-align:left;">NO_CONNECTION</td><td style="text-align:left;">Can not get connection error</td></tr><tr><td style="text-align:left;">707</td><td style="text-align:left;">NEED_REDIRECTION</td><td style="text-align:left;">Need direction</td></tr><tr><td style="text-align:left;">800</td><td style="text-align:left;">CONFIG_ERROR</td><td style="text-align:left;">Configuration error</td></tr></tbody></table><blockquote><p>All exceptions are refactored in latest version by extracting uniform message into exception classes. Different error codes are added to all exceptions. When an exception is caught and a higher-level exception is thrown, the error code will keep and pass so that users will know the detailed error reason. A base exception class &quot;ProcessException&quot; is also added to be extended by all exceptions.</p></blockquote></div><!----><footer class="page-meta"><div class="meta-item edit-link"><a href="https://github.com/apache/iotdb/edit/rel/0.13/docs/UserGuide/API/Status-Codes.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? 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