### Author:  [@Ayush](https://discuss.elastic.co/u/Ayush)
#### Post date: [August 3, 2014, 8:14am UTC](https://discuss.elastic.co/t/using-existing-field-for-mapping/19051/1 "2014-08-03T08:14:59Z")
I am new to elastic search, I have created an index "cmn" with a type
"mention". I am trying to import data from my existing solr to
elasticsearch, so I want to map an existing field to the \_id field.
I have created the following file under /config/mappings/cmn/,
```
{
"mappings": {
"mentions":{
```
"\_id" : {
"path" : "docKey"
}
}
}
}
But this doesn't seem to be working, every time I index a record the
following \_id is created,
```
"_index": "cmn",
"_type": "mentions",
"_id": "k4E0dJr6Re2Z39HAIjYMmg",
"_score": 1
```
Also, the mapping is not reflects. I have also tried the following option,
```
{
"mappings": {
```
"\_id" : {
"path" : "docKey"
}
}
}
SAMPLE DOCUMENT: Basically a tweet.
```
{
"usrCreatedDate": "2012-01-24 21:34:47",
"sex": "U",
"listedCnt": 2,
"follCnt": 432,
"state": "Southampton",
"classified": 0,
"favCnt": 468,
"timeZone": "Casablanca",
"twitterId": 473333038,
"lang": "en",
"stnostem": "#ootd #ootw #fashion #styling #photography
```
#white #pink #playsuit #prada #sunny #spring http://t.co/YbPFrXlpuh",
"sourceId": "tw",
"timestamp": "2014-04-09T22:58:00.396Z",
"sentiment": 0,
"updatedOnGMTDate": "2014-04-09T22:56:57.000Z",
"userLocation": "Southampton",
"age": 0,
"priorityScore": 57.4700012207031,
"statusCnt": 14612,
"name": "YazzyK",
"profilePicUrl":
"http://pbs.twimg.com/profile\_images/453578494556270594/orsA0pKi\_normal.jpeg",
"mentions": "",
"sourceStripped": "Instagram",
"collectionName": "STREAMING",
"tags": "557/161/193/197",
"msgid": 1397084280396.33,
"_version_": 1464949081784713200,
"url2":
"{"urls":[{"url":"http://t.co/YbPFrXlpuh","expandedURL":"http://instagram.com/p/mliZbgxVZm/","displayURL":"instagram.com/p/mliZbgxVZm/","start":88,"end":110}]}",
"links": "http://t.co/YbPFrXlpuh",
"retweetedStatus": "",
"twtScreenName": "YazKader",
"postId": "454030232501358592",
"country": "Bermuda",
"message": "#ootd #ootw #fashion #styling #photography
#white #pink #playsuit #prada #sunny #spring http://t.co/YbPFrXlpuh",
"source": "\ > rel="nofollow"\>Instagram",
> > "parentStatusId": -1,
> > "bio": "Live and breathe Fashion. Persian and proud-
> > Instagram: @Yazkader",
> > "createdOnGMTDate": "2014-04-09T22:56:57.000Z",
> > "searchText": "#ootd #ootw #fashion #styling #photography
> > #white #pink #playsuit #prada #sunny #spring [http://instagram.com/p/mliZbgxVZm/](http://t.co/YbPFrXlpuh)",
> > "isFavorited": "False",
> > "frenCnt": 214,
> > "docKey": "tw\_454030232501358592"
> > }
> > Also, how can we create unique mapping for each "TYPE" and not just the
> > index.
> >
> > Thanks
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---
### Author:  [@Tihomir\_Lichev1](https://discuss.elastic.co/u/Tihomir_Lichev1)
#### Post date: [August 5, 2014, 11:46am UTC](https://discuss.elastic.co/t/using-existing-field-for-mapping/19051/4 "2014-08-05T11:46:15Z")
1. Try go execute GET [http://yourhost:9200/\_mapping](http://yourhost:9200/_mapping) and check if the
mapping mentions is properly created with correct \_id path
2. When indexing the documents you can construct your index request this
way:
IndexRequestBuilder indexRequestBuilder = getClient().prepareIndex(index,
type).setSource(data);
where data is your Map or JSON you want to index
I tested with curl (-XPUT for mapping and -XPOST for indexing ! ) and seems
like it works 🙂
I'm also using \_id path and Java API in my own project and have no problems
with it so far
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---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:10am UTC](https://discuss.elastic.co/t/using-existing-field-for-mapping/19051/5 "2017-07-06T01:10:46Z")