# Input Data Constraints

**URL:** <https://forum.bubble.io/t/input-data-constraints/328090>\
**Category:** Need help\
**Created:** [June 24, 2024, 3:48pm UTC](https://forum.bubble.io/t/input-data-constraints/328090 "2024-06-24T15:48:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![amirmalik123](https://avatars.discourse-cdn.com/v4/letter/a/77aa72/32.png) [@amirmalik123](https://forum.bubble.io/u/amirmalik123)\
**Post date:** [June 24, 2024, 3:48pm UTC](https://forum.bubble.io/t/input-data-constraints/328090/1 "2024-06-24T15:48:54Z")

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I would like to restrict a format for certain data fields- e.g. phone numbers in UK format- or have addresses with certain formats. What is the easiest way of doing this? e.g. the phone number must be a field starting with a 07 and be in a format 07xxx xxxxxx

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**Author:** ![rakshitkumar90](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/rakshitkumar90/32/221187_2.png) [@rakshitkumar90](https://forum.bubble.io/u/rakshitkumar90)\
**Post date:** [June 24, 2024, 4:20pm UTC](https://forum.bubble.io/t/input-data-constraints/328090/2 "2024-06-24T16:20:09Z")

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there’s a plugin called “international phone numbers” works well with all

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**Author:** ![system](https://us1.discourse-cdn.com/bubble/original/3X/2/8/2847faa74692c2ffa5d939d3dc3724cdd060d247.png) [@system](https://forum.bubble.io/u/system)\
**Post date:** [September 2, 2024, 3:49pm UTC](https://forum.bubble.io/t/input-data-constraints/328090/3 "2024-09-02T15:49:32Z")

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