# List of common errors leading to "failure" in Batch Searches

## SearchException: query='AND ada'

**One or several of your queries contains syntax errors**.

It means that you wrote one or more of your queries the wrong way with some characters that are reserved as operators: [**read the list of syntax errors by clicking here**](https://icij.gitbook.io/datashare/usage/batch-search-documents).

**You need to correct the error(s) in your CSV** and re-launch your new batch search with a CSV that does not contain errors. [Check how to create a batch search](https://icij.gitbook.io/datashare/usage/batch-search-documents).

Datashare **stops at the first syntax error**. It reports only the first ​error. You might need to **check all your quferies** as some errors can remain after correcting the first one.

Example of a syntax error message:

*SearchException: query='AND ada' message='org.icij.datashare.batch.SearchException: org.elasticsearch.client.ResponseException: method \[POST], host \[<http://elasticsearch:9200>], URI \[/local-datashare/doc/\_search?typed\_keys=true\&ignore\_unavailable=false\&expand\_wildcards=open\&allow\_no\_indices=true\&scroll=60000ms\&search\_type=query\_then\_fetch\&batched\_reduce\_size=512], status line \[HTTP/1.1 400 Bad Request] {"error":{"root\_cause":\[{"type":"query\_shard\_exception","reason":"Failed to parse query \[AND ada]","index\_uuid":"pDkhK33BQGOEL59-4cw0KA","index":"local-datashare"}],"type":"search\_phase\_execution\_exception","reason":"all shards failed","phase":"query","grouped":true,"failed\_shards":\[{"shard":0,"index":"local-datashare","node":"\_jPzt7JtSm6IgUqrtxNsjw","reason":{"type":"query\_shard\_exception","reason":"Failed to parse query \[AND ada]","index\_uuid":"pDkhK33BQGOEL59-4cw0KA","index":"local-datashare","caused\_by":{"type":"parse\_exception","reason":"Cannot parse 'AND ada': Encountered " \<AND> "AND "" at line 1, column 0.\nWas expecting one of:\n \<NOT> ...\n "+" ...\n "-" ...\n \<BAREOPER> ...\n "(" ...\n "\*" ...\n \<QUOTED> ...\n \<TERM> ...\n \<PREFIXTERM> ...\n \<WILDTERM> ...\n \<REGEXPTERM> ...\n "\[" ...\n "{" ...\n \<NUMBER> ...\n \<TERM> ...\n ","caused\_by":{"type":"parse\_exception","reason":"Encountered " \<AND> "AND "" at line 1, column 0.\nWas expecting one of:\n \<NOT> ...\n "+" ...\n "-" ...\n \<BAREOPER> ...\n "(" ...\n "\*" ...\n \<QUOTED> ...\n \<TERM> ...\n \<PREFIXTERM> ...\n \<WILDTERM> ...\n \<REGEXPTERM> ...\n "\[" ...\n "{" ...\n \<NUMBER> ...\n \<TERM> ...\n "}}}}]},"status":400}'*

## elasticsearch: Name does not resolve

If you have a message which contain '*elasticsearch: Name does not resolve*', it means that Datashare can't make Elastic Search, its search engine, work.

In that case, you need to **re-start Datashare**: check how for [Mac](https://icij.gitbook.io/datashare/local-mode/install-datashare-on-mac/open-datashare-on-mac), [Windows](https://icij.gitbook.io/datashare/local-mode/install-datashare-on-windows/open-datashare-on-windows) or [Linux](https://icij.gitbook.io/datashare/local-mode/install-datashare-on-linux/open-datashare-on-linux).

Example of a message regarding a problem with ElasticSearch:

*SearchException: query='lovelace' message='org.icij.datashare.batch.SearchException: java.io.IOException: elasticsearch: Name does not resolve'*