# \#prevent-duplicate

**URL:** https://forum.kintone.dev/tag/prevent-duplicate/39.md

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## [How to set up a field group via API? How to verify a field's Prohibit duplicate values setting?](https://forum.kintone.dev/t/how-to-set-up-a-field-group-via-api-how-to-verify-a-fields-prohibit-duplicate-values-setting/801)

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**Author:** [@tuankiet116](https://forum.kintone.dev/u/tuankiet116)\
**Replies:** 2\
**Last updated:** [June 28, 2023, 10:44pm UTC](https://forum.kintone.dev/t/how-to-set-up-a-field-group-via-api-how-to-verify-a-fields-prohibit-duplicate-values-setting/801 "2023-06-28T22:44:21Z")

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Question / Problem Hi, I am currently setting up an App using the Add Form Fields API, and I have 2 questions about the Field group & Lookup fields. Question 1 - How to set up a Field group via API? Can I use the Add Fo…

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## [How to prevent duplicate Drop-down field entries?](https://forum.kintone.dev/t/how-to-prevent-duplicate-drop-down-field-entries/626)

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**Author:** [@Jayron\_Rosel](https://forum.kintone.dev/u/Jayron_Rosel)\
**Replies:** 7\
**Last updated:** [December 9, 2022, 6:05am UTC](https://forum.kintone.dev/t/how-to-prevent-duplicate-drop-down-field-entries/626 "2022-12-09T06:05:51Z")

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How can I prevent duplicate data on the Drop-down field? Unfortunately, the Drop-down field does not support Prohibit duplicate values setting. Screenshot of the App with the Drop-down field: Screenshot of Drop-dow…

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## [How to Prevent duplicate values in the Date and time field?](https://forum.kintone.dev/t/how-to-prevent-duplicate-values-in-the-date-and-time-field/687)

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**Author:** [@Jayron\_Rosel](https://forum.kintone.dev/u/Jayron_Rosel)\
**Replies:** 1\
**Last updated:** [December 5, 2022, 6:45am UTC](https://forum.kintone.dev/t/how-to-prevent-duplicate-values-in-the-date-and-time-field/687 "2022-12-05T06:45:47Z")

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Question / Problem How do I prevent duplicate values in the Date and time field or Time field? Is there a native feature in Kintone to prevent users from inputting the same values in an App?

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## [How to stop Kintone from saving duplicate records in the Create Record page?](https://forum.kintone.dev/t/how-to-stop-kintone-from-saving-duplicate-records-in-the-create-record-page/233)

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**Author:** [@legacy\_user](https://forum.kintone.dev/u/legacy_user)\
**Replies:** 1\
**Last updated:** [January 11, 2022, 10:35pm UTC](https://forum.kintone.dev/t/how-to-stop-kintone-from-saving-duplicate-records-in-the-create-record-page/233 "2022-01-11T22:35:21Z")

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I want to prevent users from saving duplicate company records in the database. So in the app.record.create.submit event handler, I call checkDuplicate(record) to check to see if the company record already exists. The c…

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## [Prevent users from entering duplicate values with Prohibit Duplicate Values Fields' Settings](https://forum.kintone.dev/t/prevent-users-from-entering-duplicate-values-with-prohibit-duplicate-values-fields-settings/625)

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**Author:** [@Genji](https://forum.kintone.dev/u/Genji)\
**Replies:** 0\
**Last updated:** [October 6, 2022, 5:56am UTC](https://forum.kintone.dev/t/prevent-users-from-entering-duplicate-values-with-prohibit-duplicate-values-fields-settings/625 "2022-10-06T05:56:33Z")

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Prevent Duplicate Values with Field Settings An easy way to prevent users from entering the same values in a Kintone App is to use the Prohibit duplicate values setting. Fields with Prohibit duplicate values setting The…