Problem with Amazon SP-API estimateTransport
I am having trouble getting estimateTransport() to work It is returning FTXGatewayService.estimateLtlShipment returned error code: 412 Why? The ShipmentType of Small Parcel / "SP" works, but "LTL" does not. The Amazon workflow says to first PUT to fba/inbound/v0/shipments/FBAxxxx/transport Then POST…