We have a problem with cost price update - we get a "Cost Price calculation already active" msg whenever we try to update costs on an item through the Calculate Cost Price (ticpr2210m000) session. We are prevented from updating here yet we can update through the item session.
We wish to use Bottom-Up method and in the Item session must use Maintain Item single level.
Thank You.

Are you sure someone isn't running this session already? I'd check Application Locks (ttadv9598m000) to see if there's a process for this session (ticpr2210m000) that might be active.