db-schema/db_scripts/diff/10331.down

USE provisioning;

DELETE FROM language_strings WHERE code='Client.Voip.ExistingWebUser';

-- delete unique constraint
ALTER TABLE voip_subscribers DROP INDEX webuser_dom_idx;

-- remove suffix set when adding above unique constraint
UPDATE voip_subscribers
SET webusername=REPLACE(webusername, CONCAT('-', id), '')
WHERE webusername LIKE CONCAT('%', '-', id)