# List Upload Source

**URL:** <https://community.hubspot.com/t/list-upload-source/86697>\
**Category:** Lists, Lead Scoring & Workflows\
**Tags:** professional\
**Created:** [August 2, 2023, 10:19pm UTC](https://community.hubspot.com/t/list-upload-source/86697 "2023-08-02T22:19:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![LReinhardt1](https://avatars.discourse-cdn.com/v4/letter/l/a8b319/32.png) [@LReinhardt1](https://community.hubspot.com/u/LReinhardt1)\
**Post date:** [August 2, 2023, 10:19pm UTC](https://community.hubspot.com/t/list-upload-source/86697/1 "2023-08-02T22:19:43Z")

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How can I require people who upload an offline list to select a source? Is creating a contact property the only way to do this?

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**Author:** ![Whathcock](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/whathcock/32/98434_2.png) [@Whathcock](https://community.hubspot.com/u/Whathcock)\
**Post date:** [August 3, 2023, 1:52pm UTC](https://community.hubspot.com/t/list-upload-source/86697/2 "2023-08-03T13:52:12Z")

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Hi @LReinhardt1 ,

It looks like at this time mandatory fields on imports isn’t supported. However, its an active post in the[Ideas Forum.](https://community.hubspot.com/t5/HubSpot-Ideas/Mandatory-fields-on-imports/idi-p/369629)The product team reviews these submissions based on popularity, so I’d recommed upvoting and commenting with your use case.

Hope this helps,

Whitney

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