{ title => t8('Email'), type => 'email_journal', model => 'EmailJournal', number => 'id', description => 'subject', description_title => t8('Subject'), },
{ title => t8('AR Transaction'), type => 'ar_transaction', model => 'Invoice', number => 'invnumber', },
{ title => t8('AP Transaction'), type => 'ap_transaction', model => 'PurchaseInvoice', number => 'invnumber', },
+ { title => t8('Dunning'), type => 'dunning', model => 'Dunning', number => 'dunning_id', },
);
my @link_types = map { +{ %link_type_defaults, %{ $_ } } } @link_type_specifics;