# "type": "illegal\_argument\_exception", "reason": "\[field\_sort\] unknown field \[title\], parser not found"

**URL:** <https://discuss.elastic.co/t/type-illegal-argument-exception-reason-field-sort-unknown-field-title-parser-not-found/110681>\
**Category:** Elasticsearch\
**Created:** [December 7, 2017, 1:44pm UTC](https://discuss.elastic.co/t/type-illegal-argument-exception-reason-field-sort-unknown-field-title-parser-not-found/110681 "2017-12-07T13:44:47Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [December 7, 2017, 2:37pm UTC](https://discuss.elastic.co/t/type-illegal-argument-exception-reason-field-sort-unknown-field-title-parser-not-found/110681/2 "2017-12-07T14:37:03Z")

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Do you run the query on a specific index or on all indices?  
What is the mapping?

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_[View the full topic](https://discuss.elastic.co/t/type-illegal-argument-exception-reason-field-sort-unknown-field-title-parser-not-found/110681)._