Dear List I am writing this here in case anyone else still has this problem, and also to thank Bob Birchall @ Calyx, who posted this last month, and saved us hours of head scratching!

We have an entry in the issues table with a NULL itemnumber. This is causing the 'holds to pull' report to fail. Is it safe to simply delete the corrupt row from the issues table?

Sure enough, we did have 3 rows in our issues table, where the itemnumber, branch and patron were null, but there was a checked-out date. I have no idea how Koha allows this to happen, but as soon as the rogue rows were deleted, the report worked. Agnes -- Agnes Rivers-Moore Assistant Librarian Hanover Public Library