# Issue with date format change while reindexing

**URL:** <https://discuss.elastic.co/t/issue-with-date-format-change-while-reindexing/169590>\
**Category:** Elasticsearch\
**Created:** [February 22, 2019, 2:00pm UTC](https://discuss.elastic.co/t/issue-with-date-format-change-while-reindexing/169590 "2019-02-22T14:00:50Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![meena](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/meena/32/71304_2.png) [@meena](https://discuss.elastic.co/u/meena)\
**Post date:** [February 25, 2019, 3:43pm UTC](https://discuss.elastic.co/t/issue-with-date-format-change-while-reindexing/169590/10 "2019-02-25T15:43:46Z")

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The source and destination are in yyyy-mm-dd format so to have a uniform data format we are looking for this change. we do have some other fields with changes in mappings and settings so we would like to do all the changes in one shot by doing reindexing

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_[View the full topic](https://discuss.elastic.co/t/issue-with-date-format-change-while-reindexing/169590)._