Here is a direct quote from one of our suppliers....
"Now I'd rather take a chance and potentially ship incorrectly than hold a shipment to the following day for checking but have production stopped." This was after many issues of Part A being ordered and Part B being shipped. Everything was shipped on-time however 1/100 parts were the wrong part. Now this would hold up production even longer than shipping the right part 1 day late as the wrong part needs to be quarantined, shipped back to the supplier and then we have to wait for the correct part to come in. (considering we are logistically challenged here in BC, this could sometimes take 2 weeks)
After a few emails, conference calls, and one on-site visit, we have finally solved the solution. We agreed to push our ordering date back one day to give them that extra time to do a pre-shipping quality check...
Unless we had agreed to accept shipments that were potentially incorrect/nonconforming, and proceed with internal inspection/sorting I would inform the supplier to not send the shipment until it was verified that 100% was conforming prior to it being received on our docks....