# Migrate data 6.4 \> 6.8 \> 7.2

**URL:** <https://discuss.elastic.co/t/migrate-data-6-4-6-8-7-2/191623>\
**Category:** Elasticsearch\
**Created:** [July 22, 2019, 11:21am UTC](https://discuss.elastic.co/t/migrate-data-6-4-6-8-7-2/191623 "2019-07-22T11:21:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zen.xen](https://avatars.discourse-cdn.com/v4/letter/z/e495f1/32.png) [@zen.xen](https://discuss.elastic.co/u/zen.xen)\
**Post date:** [July 22, 2019, 11:21am UTC](https://discuss.elastic.co/t/migrate-data-6-4-6-8-7-2/191623/1 "2019-07-22T11:21:37Z")

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Hello,  
my environment: Windows 2012  
I have migrated data from 6.4 to 6.8:

1. backup data on 6.4
2. restore backup on 6.8  
everything works fine.

Next I have migrated data from 6.8 to 7.2.

1. backup data on 6.8
2. restore backup on 7.2  
All indices are visible, I have installed elasticsearch-HQ-master but when I open kibana page I have this error:

```auto
{"message":"mapping set to strict, dynamic introduction of [references] within [doc] is not allowed: [strict_dynamic_mapping_exception] mapping set to strict, dynamic introduction of [references] within [doc] is not allowed","statusCode":400,"error":"Bad Request"}

```

I don't undestand this error and how can I fix it?

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<div class="post-metadata">

**Author:** ![mattsdevop](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mattsdevop/32/45160_2.png) [@mattsdevop](https://discuss.elastic.co/u/mattsdevop)\
**Post date:** [July 22, 2019, 1:47pm UTC](https://discuss.elastic.co/t/migrate-data-6-4-6-8-7-2/191623/2 "2019-07-22T13:47:26Z")

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This might help you

> [@Kibana: mapping set to strict, dynamic introduction of \[references\] within \[doc\] is not allowed](https://discuss.elastic.co/t/kibana-mapping-set-to-strict-dynamic-introduction-of-references-within-doc-is-not-allowed/176403/27):
>
> I believe they closed this github issue already that I started (link is found few posts back). I do not know exactly , why it happened, but as I tried it again, I managed to get this to work. If you're still having problems, you should open an issue etc.. Raul

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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:** [August 19, 2019, 1:47pm UTC](https://discuss.elastic.co/t/migrate-data-6-4-6-8-7-2/191623/3 "2019-08-19T13:47:36Z")

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