}
$borrower{cardnumber} = undef if $borrower{cardnumber} eq "";
$borrower{auth_method} = undef if $borrower{auth_method} eq "";
# Check if borrower category code exists and if it matches to a known category. Pushing error to missing_criticals otherwise.
$self->check_borrower_category($borrower{categorycode}, $borrowerline, $line_number, \@missing_criticals);
-