Importing new items CI_ITEM - Default Warehouse and Std Cost > Std Price
If default warehouse code for new item is alpha, it will fail on import (error: default warehouse is non-numeric), but succeed on an import to update an existing item. Also, for new items, if the std. cost is greater than the price (yes, could happen if price is zero) it fails on new item add but works on import to update item.
Sage v. 4.50, could be other versions too.