# How to rename the field name in document?

**URL:** <https://discuss.elastic.co/t/how-to-rename-the-field-name-in-document/14487>\
**Category:** Elasticsearch\
**Created:** [November 20, 2013, 9:22am UTC](https://discuss.elastic.co/t/how-to-rename-the-field-name-in-document/14487 "2013-11-20T09:22:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Vijay](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vijay/32/816_2.png) [@Vijay](https://discuss.elastic.co/u/Vijay)\
**Post date:** [November 20, 2013, 9:22am UTC](https://discuss.elastic.co/t/how-to-rename-the-field-name-in-document/14487/1 "2013-11-20T09:22:35Z")

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Available:  
{  
"attributes" : {  
"Gender" : "Men"  
}  
}

Want:  
{  
"attributes" : {  
"gender" : "Men"  
}  
}

I want to rename the gender field name.  
I have millions record/document so I don't want to re-index it.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 2:06am UTC](https://discuss.elastic.co/t/how-to-rename-the-field-name-in-document/14487/2 "2017-07-06T02:06:01Z")

</div>