# Extra Fields

**URL:** <https://discuss.elastic.co/t/extra-fields/63806>\
**Category:** Elasticsearch\
**Created:** [October 24, 2016, 9:52pm UTC](https://discuss.elastic.co/t/extra-fields/63806 "2016-10-24T21:52:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![chromechris](https://avatars.discourse-cdn.com/v4/letter/c/e47c2d/32.png) [@chromechris](https://discuss.elastic.co/u/chromechris)\
**Post date:** [October 24, 2016, 9:52pm UTC](https://discuss.elastic.co/t/extra-fields/63806/1 "2016-10-24T21:52:02Z")

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I have a dumb question, but I was wondering if I have a elasticsearch mappings with multiple fields in the property section of the mappings, then I send a document to elasticsearch, but the document is missing a few fields that are not in the mappings, this should not cause any issue correct? Thanks in advance guys 🙂

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [October 25, 2016, 4:04am UTC](https://discuss.elastic.co/t/extra-fields/63806/2 "2016-10-25T04:04:53Z")

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It'll create a null value field 🙂

That may or may not be an issue for you though. Doing aggs on time based data will look weird.

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**Author:** ![chromechris](https://avatars.discourse-cdn.com/v4/letter/c/e47c2d/32.png) [@chromechris](https://discuss.elastic.co/u/chromechris)\
**Post date:** [October 25, 2016, 7:42pm UTC](https://discuss.elastic.co/t/extra-fields/63806/3 "2016-10-25T19:42:21Z")

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Thanks warkolm. 🙂

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 10:09pm UTC](https://discuss.elastic.co/t/extra-fields/63806/4 "2017-07-05T22:09:47Z")

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