For details on the shipment creation workflow "Send to Amazon", see Create shipments with Send to Amazon help page.
You can also check the problems for shipping plan by using the following self-service tool.
On this page, we’ll help you with the prerequisite step to creating your shipping plan, selecting the products to send to Amazon.
After you have completed your shipment and sent it to Amazon, use the Shipping Queue to track your shipment as it progresses through the fulfillment network.
Follow 6 steps below to create your shipment once selecting products (see the next section "Select products ").
After you select the products that you want to send, you are ready to set the quantity for each product. Go to Step 2: Set quantity for shipment to Amazon