# Is this for 1.3.7 or from ES 2 version onwards

**URL:** <https://discuss.elastic.co/t/is-this-for-1-3-7-or-from-es-2-version-onwards/39648>\
**Category:** Elasticsearch\
**Created:** [January 20, 2016, 11:49am UTC](https://discuss.elastic.co/t/is-this-for-1-3-7-or-from-es-2-version-onwards/39648 "2016-01-20T11:49:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![justnj](https://avatars.discourse-cdn.com/v4/letter/j/e19adc/32.png) [@justnj](https://discuss.elastic.co/u/justnj)\
**Post date:** [January 20, 2016, 11:49am UTC](https://discuss.elastic.co/t/is-this-for-1-3-7-or-from-es-2-version-onwards/39648/1 "2016-01-20T11:49:03Z")

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Deleting mappings  
Finally, it is no longer possible to delete a type mapping (along with the documents of that type). Even after removing a mapping, information about the deleted fields continues to exist at the Lucene level, which can cause index corruption if fields of the same name are added later on. You can either leave mappings as they are or reindex your data into a new index.

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**Author:** ![abeyad](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@abeyad](https://discuss.elastic.co/u/abeyad)\
**Post date:** [January 20, 2016, 8:38pm UTC](https://discuss.elastic.co/t/is-this-for-1-3-7-or-from-es-2-version-onwards/39648/2 "2016-01-20T20:38:27Z")

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ES 2.x

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:22pm UTC](https://discuss.elastic.co/t/is-this-for-1-3-7-or-from-es-2-version-onwards/39648/3 "2017-07-05T23:22:56Z")

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