# JSON Extractor Problem 2

**URL:** <https://community.graylog.org/t/json-extractor-problem-2/3150>\
**Category:** Graylog Central (peer support)\
**Created:** [November 13, 2017, 5:12pm UTC](https://community.graylog.org/t/json-extractor-problem-2/3150 "2017-11-13T17:12:27Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![habib-the-sweet](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/habib-the-sweet/32/1204_2.png) [@habib-the-sweet](https://community.graylog.org/u/habib-the-sweet)\
**Post date:** [November 14, 2017, 5:17pm UTC](https://community.graylog.org/t/json-extractor-problem-2/3150/7 "2017-11-14T17:17:45Z")

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Well. I just renamed timestamp field from JSON and have got next error:

`ERROR [Messages] Failed to index [3] messages. Please check the index error log in your web interface for the reason. Error: One or more of the items in the Bulk request failed, check BulkResult.getItems() for more information.`

`{"type":"mapper_parsing_exception","reason":"failed to parse [level]","caused_by":{"type":"number_format_exception","reason":"For input string: \"INFO\""}}`

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