# \[logstash.outputsCould not index event to Elasticsearch."error {"type"=\>"mapper\_parsing\_exception", "reason"=\>"object mapping for \[host\] tried to parse field \[host\] as object, but found a concrete value"

**URL:** <https://discuss.elastic.co/t/logstash-outputscould-not-index-event-to-elasticsearch-error-type-mapper-parsing-exception-reason-object-mapping-for-host-tried-to-parse-field-host-as-object-but-found-a-concrete-value/294000>\
**Category:** Logstash\
**Created:** [January 11, 2022, 9:18am UTC](https://discuss.elastic.co/t/logstash-outputscould-not-index-event-to-elasticsearch-error-type-mapper-parsing-exception-reason-object-mapping-for-host-tried-to-parse-field-host-as-object-but-found-a-concrete-value/294000 "2022-01-11T09:18:04Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [January 11, 2022, 1:09pm UTC](https://discuss.elastic.co/t/logstash-outputscould-not-index-event-to-elasticsearch-error-type-mapper-parsing-exception-reason-object-mapping-for-host-tried-to-parse-field-host-as-object-but-found-a-concrete-value/294000/2 "2022-01-11T13:09:09Z")

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See [this](https://discuss.elastic.co/t/getting-illegal-state-exception-error-while-pushing-logs-to-elasticsearch/290029/2) answer. Once you have indexed an document in which [host] is an object (probably containing [host][name]) any event that in which [host] is text will be rejected.

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_[View the full topic](https://discuss.elastic.co/t/logstash-outputscould-not-index-event-to-elasticsearch-error-type-mapper-parsing-exception-reason-object-mapping-for-host-tried-to-parse-field-host-as-object-but-found-a-concrete-value/294000)._