# Auth0 username format without pipe/special characters? **URL:** \ **Category:** Get Help\ **Created:** [December 6, 2019, 9:58am UTC](https://community.auth0.com/t/auth0-username-format-without-pipe-special-characters/34764 "2019-12-06T09:58:13Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![stephen.slade](https://sea1.discourse-cdn.com/auth0/user_avatar/community.auth0.com/stephen.slade/32/33282_2.png) [@stephen.slade](https://community.auth0.com/u/stephen.slade)\ **Post date:** [June 7, 2022, 9:18am UTC](https://community.auth0.com/t/auth0-username-format-without-pipe-special-characters/34764/4 "2022-06-07T09:18:55Z")
Hi there - interested to know if you made this work using rules? We have the same issue with an application not able to accept pipe characters in the sub credential but according to this article it is not possible to override this character. > [@JWT token: sub claim format](https://community.auth0.com/t/jwt-token-sub-claim-format/63112): > > Hi, I have a question regarding the format of the claim sub. Current value is the Auth0 user ID: identity\_provider|user\_id and I wanted to know if it’s possible to override it somehow? I found several posts bringing up this question and in which the answer was no and: Unlikely to change in the foreseeable future: yes; guaranteed: no Associated posts: [Sub claim format (Kubernetes restricted set)](https://community.auth0.com/t/sub-claim-format-kubernetes-restricted-set/21996)[Sub claim format for M2M tokens](https://community.auth0.com/t/sub-claim-format-for-m2m-tokens/39451) I allowed myself to ask it again if, by any chance, the fut… --- _[View the full topic](https://community.auth0.com/t/auth0-username-format-without-pipe-special-characters/34764)._