Use this call to opt-in to an eBay seller program. Currently available programs include the Out of Stock Control and the Selling Policy Management program. When you opt-in to the SELLING_POLICY_MANAGEMENT, eBay can associate the business policies you create with the items you list.
Note: It can take up to 24-hours for eBay to process your request to opt-in to a Seller Program. Use the Get Opted-in Programs call to check the status of your request after a processing period has passed.
The selling policy management program that sellers can participate in by opting-in to the program. Sellers must opt-in to this program if they want eBay to associste the business policies they create with the items they list.