my $subfieldsToAllowForBatchmod = C4::Context->preference('SubfieldsToAllowForRestrictedBatchmod');
my $allowAllSubfields = (
not defined $subfieldsToAllowForBatchmod
my $subfieldsToAllowForBatchmod = C4::Context->preference('SubfieldsToAllowForRestrictedBatchmod');
my $allowAllSubfields = (
not defined $subfieldsToAllowForBatchmod