# Java API Client compatibility mode

**URL:** https://discuss.elastic.co/t/java-api-client-compatibility-mode/310994
**Category:** Elasticsearch
**Tags:** language-clients
**Created:** [July 29, 2022, 2:35pm UTC](https://discuss.elastic.co/t/java-api-client-compatibility-mode/310994 "2022-07-29T14:35:49Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![sbrunot](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sbrunot/32/103222_2.png) [@sbrunot](https://discuss.elastic.co/u/sbrunot)
#### Post date: [July 29, 2022, 2:35pm UTC](https://discuss.elastic.co/t/java-api-client-compatibility-mode/310994/1 "2022-07-29T14:35:49Z")

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Hello,

I have a question regarding the compatibility mode of the Java API Client version 7.17.3.

Looking at the documentation section entitled "Elasticsearch server compatibility policy" ([Introduction | Elasticsearch Java API Client [7.17] | Elastic](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/7.17/introduction.html#_elasticsearch_server_compatibility_policy)), my understanding is that the Java API Client version 7.17.3 is compatible with Elasticsearch server 7.x starting with 7.17.3 but is not compatible with Elasticsearch 8.x

Looking at the documentation section entitled "Compatibility mode: using a 7.17 client with Elasticsearch 8.x" ([Migrating from the High Level Rest Client | Elasticsearch Java API Client [7.17] | Elastic](https://www.elastic.co/guide/en/elasticsearch/client/java-api-client/7.17/migrate-hlrc.html#_compatibility_mode_using_a_7_17_client_with_elasticsearch_8_x)), it seem that the 7.17.3 client is compatible with Elasticsearch 8.X

Is it true that the Java API Client 7.17.3 is officially compatible with version 7.17.3+ of Elasticsearch including 8.x ? If it is, is it "guaranteed" that it will be compatible with future version 8.x of Elasticsearch, and are there any limitations ?

Thanks for your help.

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<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: [August 26, 2022, 2:36pm UTC](https://discuss.elastic.co/t/java-api-client-compatibility-mode/310994/2 "2022-08-26T14:36:19Z")

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