# ES6.0 client and ES 7.0 cluster

**URL:** <https://discuss.elastic.co/t/es6-0-client-and-es-7-0-cluster/204938>\
**Category:** Elasticsearch\
**Created:** [October 23, 2019, 6:29pm UTC](https://discuss.elastic.co/t/es6-0-client-and-es-7-0-cluster/204938 "2019-10-23T18:29:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zhongchen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/zhongchen/32/56460_2.png) [@zhongchen](https://discuss.elastic.co/u/zhongchen)\
**Post date:** [October 23, 2019, 6:29pm UTC](https://discuss.elastic.co/t/es6-0-client-and-es-7-0-cluster/204938/1 "2019-10-23T18:29:04Z")

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Is it okay to use es6.0 client for es7.0 cluster? Any potential issues?

Saw the breaking changes in the rest client here. [https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking-changes-7.0.html#breaking\_70\_restclient\_changes](https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking-changes-7.0.html#breaking_70_restclient_changes)

But is it okay to continue using es6.0 for a es7.0 cluster?

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [October 23, 2019, 6:40pm UTC](https://discuss.elastic.co/t/es6-0-client-and-es-7-0-cluster/204938/2 "2019-10-23T18:40:57Z")

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Welcome.

It's probably not going to work IMO.

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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:** [November 20, 2019, 6:41pm UTC](https://discuss.elastic.co/t/es6-0-client-and-es-7-0-cluster/204938/3 "2019-11-20T18:41:11Z")

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