# Is it possible to overwrite \_source field mapping to add/remove fields?

**URL:** <https://discuss.elastic.co/t/is-it-possible-to-overwrite--source-field-mapping-to-add-remove-fields/8367>\
**Category:** Elasticsearch\
**Created:** [July 9, 2012, 8:37pm UTC](https://discuss.elastic.co/t/is-it-possible-to-overwrite--source-field-mapping-to-add-remove-fields/8367 "2012-07-09T20:37:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Yadu](https://avatars.discourse-cdn.com/v4/letter/y/e95f7d/32.png) [@Yadu](https://discuss.elastic.co/u/Yadu)\
**Post date:** [July 9, 2012, 8:37pm UTC](https://discuss.elastic.co/t/is-it-possible-to-overwrite--source-field-mapping-to-add-remove-fields/8367/1 "2012-07-09T20:37:09Z")

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Is it possible to overwrite an existing \_source field mapping to add/remove  
fields?

This is an existing mapping.

{  
"article": {

```
"_source": {
  "includes": ["item.@*", "item.displayData", "item.itemType.*"]
}

```

}  
}

I tried to remove "item.itemType.\*" so that it's not included in "\_source".  
But mapping GET doesn't show any change. Same thing happens if I try to add  
any new field to be included. Not sure if ES supports this.

Thanks,  
Yadu

---

<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, 3:20am UTC](https://discuss.elastic.co/t/is-it-possible-to-overwrite--source-field-mapping-to-add-remove-fields/8367/2 "2017-07-06T03:20:52Z")

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