# Generate a UUID using randomuuid in painless

**URL:** <https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-alerting\
**Created:** [August 14, 2018, 1:19pm UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354 "2018-08-14T13:19:36Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Yasser\_Ouakil](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yasser_ouakil/32/34466_2.png) [@Yasser\_Ouakil](https://discuss.elastic.co/u/Yasser_Ouakil)\
**Post date:** [August 14, 2018, 1:19pm UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354/1 "2018-08-14T13:19:36Z")

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Hi,

I need help please,  
i want to generate a UUID code with Painless language.  
I know that exists something like UUID.randomuuid() in Groovy, but is does not work in Painless.

Thank you !

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**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [August 17, 2018, 9:07am UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354/2 "2018-08-17T09:07:07Z")

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you cannot use this method, as it is not whitelisted in painless. Can you explain your use-case a bit, what exactly you need to do?

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<div class="post-metadata">

**Author:** ![Yasser\_Ouakil](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yasser_ouakil/32/34466_2.png) [@Yasser\_Ouakil](https://discuss.elastic.co/u/Yasser_Ouakil)\
**Post date:** [August 21, 2018, 9:25am UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354/3 "2018-08-21T09:25:14Z")

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Thank you !

I just want to generate a unique ID for each doc.

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<div class="post-metadata">

**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [August 21, 2018, 11:32am UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354/4 "2018-08-21T11:32:43Z")

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if you need this for indexing documents, Elasticsearch can autogenerate one for you, if you omit the id in the index action.

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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:** [September 18, 2018, 11:32am UTC](https://discuss.elastic.co/t/generate-a-uuid-using-randomuuid-in-painless/144354/5 "2018-09-18T11:32:44Z")

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