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During staging purchase orders in ax2009, there is an exemption table which should basically exempt PO's with a particular item for which the size is not available. 

For example, if an item (consider shoes) of size 13 is not available, and only size 7 and 8 are available, this exemption table should not stage Po's with the item of size 13. However, when I add the item of size 13 to the exemption table, it excludes all PO's containing that item regardless of the size. So the PO's with that item of size 7 and 8 are also excluded. Does anyone have a solution for this.