# How can I avoiding same input in same column

**URL:** <https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762>\
**Category:** Ask for Help\
**Created:** [February 14, 2021, 9:49am UTC](https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762 "2021-02-14T09:49:12Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![JQL](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jql/32/21612_2.png) [@JQL](https://community.glideapps.com/u/JQL)\
**Post date:** [February 14, 2021, 9:49am UTC](https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762/1 "2021-02-14T09:49:12Z")

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Hi,  
How can I avoid the same value in the same column? I have a list to add items to. No element should have the same name. How can I output an error message if the value has already been taken?

Thanks  
Jean

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**Author:** ![Darren\_Murphy](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/darren_murphy/32/47326_2.png) [@Darren\_Murphy](https://community.glideapps.com/u/Darren_Murphy)\
**Post date:** [February 14, 2021, 9:55am UTC](https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762/2 "2021-02-14T09:55:57Z")

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- Create a [User Specific Column](https://docs.glideapps.com/all/reference/data-editor/user-specific-columns) to temporarily store the user input
- Create a relation between this column and the target column
- If the relation is not empty, the user input will create a duplicate

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<div class="post-metadata">

**Author:** ![JQL](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/jql/32/21612_2.png) [@JQL](https://community.glideapps.com/u/JQL)\
**Post date:** [February 14, 2021, 9:59am UTC](https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762/3 "2021-02-14T09:59:45Z")

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Hi Darren,  
ah cool, thanks for the rapid and helpful answer.  
Thanx  
Jean

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**Author:** ![Darren\_Murphy](https://sea2.discourse-cdn.com/flex002/user_avatar/community.glideapps.com/darren_murphy/32/47326_2.png) [@Darren\_Murphy](https://community.glideapps.com/u/Darren_Murphy)\
**Post date:** [February 14, 2021, 10:04am UTC](https://community.glideapps.com/t/how-can-i-avoiding-same-input-in-same-column/22762/4 "2021-02-14T10:04:20Z")

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No problem, feel free to ask if you need any help getting it working.