Sage 200 UKI

Hi all, I am making a custom screen for Sales order. Everything was fine when I am making a sales order from 1 PC. However, when 2 users from 2 different PCs is making a sales order and posting the sales orders at the same time, this error occurs. It…

I get this message on submission of so far only two orders out of hundreds "The selected item is inactive and cannot be used for this process" I've checked the products are active and the account isn't on hold Supposedly a user was able to submit…