http://www.perlmonks.org?node_id=11158758

I've just found out the HMRC (the UK's taxation department) uses Perl for at least some of its operations...

The system is troubled today and I received this error revealing the language

Ref: /home/ewf/MODULES/Common/PaymentApiService.pm Error Code 401 at line 30

Update: corrected typo in title