while posting sales, purchase or inventory, sometimes you will get alert like this Item “itemid” is on hold for transactions in sales order/inventory on site
it is because the setting on the item is prevent to be sales/purchase/inventory transaction,
how to solve it:
- goto product information management –> common –> released product
- find itemid in this case, “ST-AE7″
- action pane : manage inventory
- click Default Order Settings
if the problem is purchase, tab purchase and uncheck stopped, 
it goes same way in inventory or sales order case