Hi Adam, yes. it was linked to a sales line which had partial delivery/invoice. From BoM designer (Engineer tab of the released product) it showed that there was no active bom version. but from the lines, the BoM was active and approved. I created a new bOM version and ran the master plan and it took into account the stock for components as i could see from the multi-pegging. please see the plan settings as in the site below (I couldn’t for some reason upload the pictures). we don’t use the product dimension. coverage plan ticked for site/warehouse under the tracking dimensions.
http://patrickams.wordpress.com/2013/01/17/master-plan-setup/
many thanks