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FAQ - Purchased Revisions

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Why can’t I purchase items by revision number?  

The bill of manufacturing requires specific part numbers to insure the engineering integrity of each parent item.  If a particular component can be purchased by revision and there is a qualitative difference among revisions, each revision must be represented by a unique item ID so that the correct revision can be assigned to the BOMs where it is used.  If a component’s revisions are interchangeable, meaning there is no qualitative difference from on revision to another, a single item ID can be used.