# Usernames getting modified – numeral “1” being added

**URL:** https://meta.discourse.org/t/usernames-getting-modified-numeral-1-being-added/169431
**Category:** Support
**Created:** [November 6, 2020, 2:01pm UTC](https://meta.discourse.org/t/usernames-getting-modified-numeral-1-being-added/169431 "2020-11-06T14:01:50Z")
**Posts on this page:** 1
**Showing post:** 5

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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: [November 6, 2020, 7:36pm UTC](https://meta.discourse.org/t/usernames-getting-modified-numeral-1-being-added/169431/5 "2020-11-06T19:36:31Z")

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After enabling SSO verbose logs, pay attention to the `external_id` you are sending Discourse. That value must be

> [@Setup DiscourseConnect - Official Single-Sign-On for Discourse (sso)](https://meta.discourse.org/t/setup-discourseconnect-official-single-sign-on-for-discourse-sso/13045/1):
>
> any string unique to the user that will never change, even if their email, name, etc change

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