# Cross reference csv userlist against new users **URL:** \ **Category:** Product Support\ **Created:** [29. September 2017 um 19:41 UTC](https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066 "2017-09-29T19:41:25Z")\ **Posts on this page:** 1\ **Showing post:** 1
**Author:** ![Ultim8](https://avatars.discourse-cdn.com/v4/letter/u/ebca7d/32.png) [@Ultim8](https://meta.discourse.org/u/Ultim8)\ **Post date:** [29. September 2017 um 19:41 UTC](https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066/1 "2017-09-29T19:41:25Z")
Continuing the discussion from [Export all users (from all time)](https://meta.discourse.org/t/export-all-users-from-all-time/70972/11): Our forum is a spin-off from another (much larger) forum… 75% of our users come from the parent forum, so we are trying to reserve usernames used there for registration on the new forum. This is to create consistency across platforms but also to prevent trolls from snatching up the names of established users. Does anyone know of a way to setup Discourse to cross reference a csv list of 56k users? Desired result - When a user signs up to the new forum, if they have chosen a name on the other forum, place them in a group , else place them in a different group. In both cases, set that group as primary. Users detected as having a matching name get tagged as “pending verification” and are then required to send us a PM on the parent forum to verify they setup the new profile with the same name. If not possible within Discourse, is there any 3rd party software that could automate the process instead? Our current process sees all new users automatically tagged as “Verification not started” until we manually check their name against the list… which is obviously not sustainable. Thanks in advance! --- _[View the full topic](https://meta.discourse.org/t/cross-reference-csv-userlist-against-new-users/71066)._