# Unexpected docvalues type NONE for field '\_parent'
**URL:** https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518
**Category:** Elasticsearch
**Created:** [May 20, 2017, 8:23am UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518 "2017-05-20T08:23:47Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@eramitsinha](https://discuss.elastic.co/u/eramitsinha)
#### Post date: [May 20, 2017, 8:23am UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518/1 "2017-05-20T08:23:47Z")
Hi,
I am migrating to Elastic Search 5.2.2 from 2.3.1, we have successfully migrated index from 2.3.1 to 5.2.2 through Snapshot and Restore.
When I am trying to update Index on 5.2.2 with updated data I am getting following error:
* * *
failed to index documents because of : |#]
Failed to execute phase [query], all shards failed; shardFailures {[ZFNfzGaFQ0adNxn7v389bw][idx\_1494326457350][0]: RemoteTransportException[[xxxx4][1.0.0.24:3457][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[Query Failed [Failed to execute main query]]; nested: IllegalStateException[unexpected docvalues type NONE for field '\_parent' (expected one of [SORTED, SORTED\_SET]). Re-index with correct docvalues type.]; }
{[TXNUeKB-SbqbiT7exb8jZQ][idx\_1494326457350][1]: RemoteTransportException[[xxxx3][1.0.0.25:3457][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[Query Failed [Failed to execute main query]]; nested: IllegalStateException[unexpected docvalues type NONE for field '\_parent' (expected one of [SORTED, SORTED\_SET]). Re-index with correct docvalues type.]; }
* * *
Not able to figure out if its able to read Index or there is issue with "docvalues type NONE for field"
Thanks,
Amit Sinha.
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [May 20, 2017, 8:36am UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518/2 "2017-05-20T08:36:07Z")
There were changes to parent/child between 2.X and 5.X including moving the P/C relationships to doc values.
Did you run the migration checker?
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### Author:  [@Shruti\_K](https://discuss.elastic.co/u/Shruti_K)
#### Post date: [May 20, 2017, 10:38am UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518/3 "2017-05-20T10:38:00Z")
Can you refer me the specific doc about P/C relationship between 2.x to 5.x here because I could not find it?
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### Author:  [@eramitsinha](https://discuss.elastic.co/u/eramitsinha)
#### Post date: [May 22, 2017, 7:46pm UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518/4 "2017-05-22T19:46:42Z")
Thanks for response.
I Ran Migration Checker on 2.3.1: Following are output.
Plugins : Green
Cluster Settings: Green
Node Settings : Green
Cluster Checkup: Blue
Indices
- xxx\_es\_idx\_1494326457350
Mappings
Parent field no longer accessible in queries
[part]:\_parent
Reindex Helper :
No indices exist which require reindexing.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 19, 2017, 7:46pm UTC](https://discuss.elastic.co/t/unexpected-docvalues-type-none-for-field--parent/86518/5 "2017-06-19T19:46:42Z")
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