API request fails with "account_permanently_locked" …why? Naomi June 08, 2018 10:50 Updated Follow The bank has permanently locked the bank account. Still having problems… The end-user will have to get in touch with their bank provider to remove the lock. Have a look at our comprehensive list of the authentication error descriptions in our API documentation. Related articles Authentication fails with "invalid_grant_type" …why? Comments 0 comments Article is closed for comments.