# Mapping set to strict, dynamic introduction of \[title\] within \[dashboard\] is not allowed when upgrading .kibana from 2.3.4 to 6.2.4

**URL:** <https://discuss.elastic.co/t/mapping-set-to-strict-dynamic-introduction-of-title-within-dashboard-is-not-allowed-when-upgrading-kibana-from-2-3-4-to-6-2-4/137393>\
**Category:** Elasticsearch\
**Created:** [June 26, 2018, 8:38am UTC](https://discuss.elastic.co/t/mapping-set-to-strict-dynamic-introduction-of-title-within-dashboard-is-not-allowed-when-upgrading-kibana-from-2-3-4-to-6-2-4/137393 "2018-06-26T08:38:52Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ndtreviv](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ndtreviv/32/22494_2.png) [@ndtreviv](https://discuss.elastic.co/u/ndtreviv)\
**Post date:** [June 26, 2018, 8:38am UTC](https://discuss.elastic.co/t/mapping-set-to-strict-dynamic-introduction-of-title-within-dashboard-is-not-allowed-when-upgrading-kibana-from-2-3-4-to-6-2-4/137393/1 "2018-06-26T08:38:52Z")

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We're upgrading our elasticsearch from 2.3.4 to 6.2.4 via 5.6.9.  
The indices created in 2.3.4 will be reindexed in 5.6.9 before the upgrade step to 6.2.4.

Currently, when migrating `.kibana` I'm getting the following error:

```auto
mapping set to strict, dynamic introduction of [title] within [dashboard] is not allowed

```

Looking at the `.kibana/dashboard/_mapping` I can see that there is already a specified field in the mapping called `title`, so it shouldn't be adding them as dynamic fields when reindexing.

What does this error really mean, and how do I get around it?

My method of migrating is:

1. Create a new index: `.kibana-r`
2. Reindex all documents from `.kibana` into `.kibana-r`
3. Check document count is the same
4. Delete and re-create .kibana
5. Reindex all documents from `.kibana-r` into `.kibana`
6. Check document count is the same
7. Delete `.kibana-r`

Thank you for any help offered.

---

<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:** [July 24, 2018, 8:39am UTC](https://discuss.elastic.co/t/mapping-set-to-strict-dynamic-introduction-of-title-within-dashboard-is-not-allowed-when-upgrading-kibana-from-2-3-4-to-6-2-4/137393/2 "2018-07-24T08:39:12Z")

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