Provide box content information using a web form
When you select this option, you will initially see one box configuration. A box configuration contains the number of items, expiration/expiration date (if applicable), box weight, and box dimensions. If you have multiple boxes with the same configuration, you only need to enter the box information once, then specify how many boxes match this configuration.
Important: If you do not provide accurate box content information, we may block future shipments and you will be charged a handling fee.
Note: Accurate carton weight and dimensions are required for all shipments, even if you choose not to provide box content information in Seller Central. For more information, see: Shipping and Routing Requirements
Add additional box configurations if you have boxes with different numbers of items, expiration/expiration dates, box weights, or box dimensions.
For shipments with only one SKU per box, click Add another box configuration at the bottom of the form to create a new row. For shipments with multiple SKUs per box, you can add additional boxes to the shipment as needed, then specify different box dimensions using the Add additional box dimensions option.
If you are not sure how many boxes your shipment will have, enter the contents of two boxes first. Then enter the information for the remaining boxes one by one until you have completed creating your shipment.
Note: Each SKU in each box can only have one expiration date/best-by date. If you have a SKU with multiple expiration dates/best-by dates, the shipment must be packaged separately in different boxes so that each SKU in each box has only one expiration date/best-by date. For more information, see Amazon Fulfillment Inventory with Expiration Dates.
Once you have confirmed that the information you provided is correct, click Confirm to proceed to the next step. You can also click Save for Later if you want to return later to complete creating your shipment.
Amazon official website original details:
Provide box content information with the web form
When choosing this option, you will initially be presented with one box configuration. A box configuration is made up of the number of units, expiration dates (if applicable), box weights, and box dimensions. If you have many boxes with the same configuration, enter the box information once and then specify how many boxes match this configuration.
Important:Failure to provide accurate box content information might result in blocking of future shipments, and a manual processing fee will be applied.
Note:Accurate carton weight and dimensions are required for all shipments, even if you opt to not provide box content information in Seller Central. For more information, see:Shipping and routing requirements.
If any of your boxes have a different number of units, expiration dates, box weights, or box dimensions, add another box configuration.
For shipments with only one SKU per box, clickAdd another box configurationat the bottom of the form to create a new row. For shipments with multiple SKUs per box, you can add boxes to the shipment as needed and use theAdd another box sizeoption to specify different box dimensions.
If you are unsure of how many boxes will be in your shipment, you can enter box content information for two boxes initially. Then enter information for additional boxes one by one until your shipment is completed.
Note:A SKU can have only one expiration date per box. If you have a SKU with multiple expiration dates, the shipment must be packed in separate boxes so that each box has only one expiration date per ASIN. For more information, seeExpiration-dated FBA inventory.
After making sure the information is correct, clickConfirmto move to the next step. If you want to complete your shipment later, clickSave for later.
Article source: Amazon official website