# unique identifier in a form

**URL:** <https://forum.mautic.org/t/unique-identifier-in-a-form/3077>\
**Category:** Product Support\
**Created:** [December 27, 2015, 11:33pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077 "2015-12-27T23:33:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![maycondotnet](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@maycondotnet](https://forum.mautic.org/u/maycondotnet)\
**Post date:** [December 27, 2015, 11:33pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077/1 "2015-12-27T23:33:33Z")

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In a form, such as leaving a field (email) how unique identifier? That is, the field can not be repeated.

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**Author:** ![maycondotnet](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@maycondotnet](https://forum.mautic.org/u/maycondotnet)\
**Post date:** [December 27, 2015, 11:33pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077/2 "2015-12-27T23:33:33Z")

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In a form, such as leaving a field (email) how unique identifier? That is, the field can not be repeated.

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**Author:** ![escopecz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/escopecz/32/370_2.png) [@escopecz](https://forum.mautic.org/u/escopecz)\
**Post date:** [December 28, 2015, 6:20pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077/3 "2015-12-28T18:20:24Z")

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Could you rephrase the question? I’m not sure I understand.

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**Author:** ![maycondotnet](https://avatars.discourse-cdn.com/v4/letter/m/e9bcb4/32.png) [@maycondotnet](https://forum.mautic.org/u/maycondotnet)\
**Post date:** [January 1, 2016, 7:03pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077/4 "2016-01-01T19:03:50Z")

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Hi Escopecz!

Must enter a validation “Email already registered”

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**Author:** ![silavapi](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/silavapi/32/7424_2.png) [@silavapi](https://forum.mautic.org/u/silavapi)\
**Post date:** [February 2, 2020, 10:54pm UTC](https://forum.mautic.org/t/unique-identifier-in-a-form/3077/5 "2020-02-02T22:54:36Z")

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Closed on February 2, 2020, 10:54pm UTC