Hi Amit
Thankyou for the reply and suggestions.
I've tried ABAP and JAva its the same. Also we are on 731 SP 5 so I don't think the note will apply.
It is strange I've removed the restriction and only have the nav attribute ( vendor account group) as a free characteristic. The query runs fine but as soon as I drill down by it I can see in SM50 the query is grinds away reading the one infocube even though there are only unassigned values for this character and navigational attribute.
Regards
Ingrid