# ES document field **URL:** \ **Category:** Elasticsearch\ **Created:** [April 2, 2014, 5:47pm UTC](https://discuss.elastic.co/t/es-document-field/16775 "2014-04-02T17:47:58Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![san](https://avatars.discourse-cdn.com/v4/letter/s/ba9def/32.png) [@san](https://discuss.elastic.co/u/san)\ **Post date:** [April 2, 2014, 5:47pm UTC](https://discuss.elastic.co/t/es-document-field/16775/1 "2014-04-02T17:47:58Z")
Could the the JSON fields of the document indexed in Elasticsearch have the following: 1. Capital letters 2. Special character such as SPACE etc. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/e13a34b2-c1d7-45f8-b82e-64c89c1cbb9c%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e13a34b2-c1d7-45f8-b82e-64c89c1cbb9c%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![Binh\_Ly\_2](https://avatars.discourse-cdn.com/v4/letter/b/d07c76/32.png) [@Binh\_Ly\_2](https://discuss.elastic.co/u/Binh_Ly_2)\ **Post date:** [April 4, 2014, 1:34pm UTC](https://discuss.elastic.co/t/es-document-field/16775/2 "2014-04-04T13:34:58Z")
For field names, capital letters yes, space yes. If it's valid JSON, it should index fine. -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/e7dc5f10-9004-4e87-a2f9-cd9d4e4310db%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e7dc5f10-9004-4e87-a2f9-cd9d4e4310db%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:38am UTC](https://discuss.elastic.co/t/es-document-field/16775/3 "2017-07-06T01:38:10Z")