We have long had some variation of this message on the Wikitech account creation screen:
If you already had a SVN account with the same username, ask it to be created manually and include this information.
This is apparently needed because there are some LDAP records left over from when SVN was used as version control which have the uid attribute (?) but are not fully functional accounts for use as Wikitech/Gerrit/Phabricator/Cloud VPS developer accounts.
Is there any reason that we can not find and remove all such LDAP records to prevent the need for manual intervention on behalf of these users?