Traced it in monitor and found out that IBO sends into server the SQL where only message.ID is asked

SELECT messages.ID from....

Thats why the ORDER BY 3 gives error, other columns have fieldnames and ORDER BY DOCNO workes OK.
Further experimenting showed that this SQL contains fields in KeyLinks.

Does this mean that I have to add 2 dummy keylinks entries?

IMVHO this can be considered as a tiny bug.

Riho-Rene Ellermaa
senior programmer