+my $authid = $input->param('authid') || 0;
+
+my $record = GetAuthority($authid);
+my $marc_flavour = C4::Context->preference('marcflavour');
+my $authfields_mapping = {
+ 'authorpersonal' => $marc_flavour eq 'MARC21' ? '100' : '200',
+ 'authorcorp' => $marc_flavour eq 'MARC21' ? '110' : '210',
+ 'authormeetingcon' => $marc_flavour eq 'MARC21' ? '111' : '210',
+ 'uniformtitle' => $marc_flavour eq 'MARC21' ? '130' : '230',
+ 'subject' => $marc_flavour eq 'MARC21' ? '150' : '250',
+};
+