@@ -, +, @@ borrowernumber --- C4/Reserves.pm | 2 ++ 1 file changed, 2 insertions(+) --- a/C4/Reserves.pm +++ a/C4/Reserves.pm @@ -324,6 +324,8 @@ See CanItemBeReserved() for possible return values. sub CanBookBeReserved{ my ($borrowernumber, $biblionumber, $pickup_branchcode, $params) = @_; + return { status => '' } unless $borrowernumber; + # Check that patron have not checked out this biblio (if AllowHoldsOnPatronsPossessions set) if ( !C4::Context->preference('AllowHoldsOnPatronsPossessions') && C4::Circulation::CheckIfIssuedToPatron( $borrowernumber, $biblionumber ) ) { --