# Non-numeric idetifiers

**URL:** <https://discuss.elastic.co/t/non-numeric-idetifiers/139329>\
**Category:** Elasticsearch\
**Created:** [July 10, 2018, 11:14am UTC](https://discuss.elastic.co/t/non-numeric-idetifiers/139329 "2018-07-10T11:14:33Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![LesioS](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lesios/32/32364_2.png) [@LesioS](https://discuss.elastic.co/u/LesioS)\
**Post date:** [July 10, 2018, 11:14am UTC](https://discuss.elastic.co/t/non-numeric-idetifiers/139329/1 "2018-07-10T11:14:34Z")

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Correct me, if I'm wrong:

As I understand there's no need to have 1, 2, 3,... identifiers in index. So it's possible that GUID is doc ID. ID `hg8ns65gy` is good also.

The most important question, if all above is correct: IDs `hg8ns65gy` and `HG8ns65gY` are different or not?

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**Author:** ![MarkDai](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@MarkDai](https://discuss.elastic.co/u/MarkDai)\
**Post date:** [July 10, 2018, 11:29am UTC](https://discuss.elastic.co/t/non-numeric-idetifiers/139329/2 "2018-07-10T11:29:23Z")

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Hi LesioS

Yes, doc ID can be GUID. You can specify ID when you index the doc,  
like "put indexname/typename/yourGUIIDhere".

IDs hg8ns65gy and HG8ns65gY are different docs per my test. 🙂

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<div class="post-metadata">

**Author:** ![LesioS](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lesios/32/32364_2.png) [@LesioS](https://discuss.elastic.co/u/LesioS)\
**Post date:** [July 10, 2018, 11:35am UTC](https://discuss.elastic.co/t/non-numeric-idetifiers/139329/3 "2018-07-10T11:35:22Z")

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Many thx - that's good news 😉

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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:** [August 7, 2018, 11:35am UTC](https://discuss.elastic.co/t/non-numeric-idetifiers/139329/4 "2018-08-07T11:35:24Z")

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Closed on August 7, 2018, 11:35am UTC

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