299 invalid B/L in B04/N9

If you're NVOCC or FF and get this rejection message after submit House AMS Ocean, it means the Ocean Carrier file the wrong Master AMS Ocean.  

Solution

Ask your Ocean Carrier to update their Master AMS Ocean from "0 regular B/L type" to "Master Bill"(import to US)  or "Master FROB"(FROB). 

Reason

CBP expect there is no House AMS Ocean linked carrier's AMS filing when carrier file their AMS as Regular B/L type. 

For more details of the AMS B/L type, you may refer to this AMS Filing Bill of Lading Type