Thanks for your help. I was able to list older vendor.

I found one more problem. When I try to search for a vendor I see the following message:

Can't use an undefined value as a HASH reference at /usr/share/koha/intranet/cgi-bin/acqui/booksellers.pl line 114.

I run the query suggested on this main list:

mysql> SELECT basketno FROM aqbasket LEFT JOIN borrowers ON (borrowernumber) WHERE borrowers.borrowernumber IS NULL;

Empty set (0.00 sec)

How can I fix this problem? Thanks for your help.

Massimo Plevani