Amazon Marketplace Web Service (MWS) will no longer be available after March 31, 2024. All MWS developers must migrate to Selling Partner API (SP-API) to avoid service disruptions. Refer to the Migration Hub for more information.
Before you can convert a listing to Fulfillment by Amazon (FBA) you need to provide additional information on any products that are batteries, contain or are sold with batteries, or may be considered dangerous goods (also called hazardous materials or Hazmat). Any attempt to convert a listing to FBA before providing battery and dangerous goods information will fail.
For more information about this policy, see Dangerous goods identification guide.
For more information about creating listings for FBA inventory see Step 1 - Create a listing and convert it to FBA.