- my %bin_whitelist = map { (ref $_ ? $_->id : $_) => 1 } listify($params{bin});
- my %wh_whitelist = map { (ref $_ ? $_->id : $_) => 1 } listify($params{warehouse});
- my %chargenumbers = map { (ref $_ ? $_->id : $_) => 1 } listify($params{chargenumber});
+ my %bin_whitelist = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{bin});
+ my %wh_whitelist = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{warehouse});
+ my %chargenumbers = map { (ref $_ ? $_->id : $_) => 1 } grep defined, listify($params{chargenumber});