Error:

What does this error message mean? ITEM_WITH_NO_VALID_FC

Resolution:

Item has no valid Fulfillment center therefore cannot be sent to FBA. There could be many reasons why it's not allowing items to be sent under this flag.

It could be a hazmat item, it could be an item that may melt in the heat during shipment. There could be a lot of reasons for this. 

The best course of action is to get with Amazon and find out what the reason is.

NOTE: Don't send this item with this error.
It'll most likely become stranded if it's not added to a shipment properly.