It depends on the item valuation method of the BOM components. Sage would only prevent items from going negative for two of it's six valuation methods (lot or serial). The other 4 valuation methods (Avg, Std, FIFO, LIFO) all will allow items to go negative.
Somebody can probably write a script that checks the component & the warehouse qty during BOM entry, but there's nothing native to Sage that's doing that automatically.
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Jim Petrie
Consultant
DSD Business Systems
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