# SSO - Updating a user's External ID

**URL:** <https://meta.discourse.org/t/sso-updating-a-users-external-id/222871>\
**Category:** SSO\
**Created:** [April 1, 2022, 7:50pm UTC](https://meta.discourse.org/t/sso-updating-a-users-external-id/222871 "2022-04-01T19:50:23Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Falco](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/falco/32/179432_2.png) [@Falco](https://meta.discourse.org/u/Falco)\
**Post date:** [April 1, 2022, 7:54pm UTC](https://meta.discourse.org/t/sso-updating-a-users-external-id/222871/2 "2022-04-01T19:54:27Z")

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External IDs must be unique.

> [@hollyw](#):
>
> is there another way we could define an additional field that every user account has, so we could store that organization ID on the backend? I know there are custom user fields you can add, but we wouldn’t want this to be something publicly visible or something that the customer would fill out as part of their profile. It’s purely for our use on the backend.

Use custom user fields. They don’t need to be visible nor editable on profile. You have full control over their visibility. And they can be set via SSO.

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