Update: Listings Items v2021-08-01 API and JSON_LISTING_FEED now include a JSON patch merge operation

The Listings Item v2021-08-01 API and JSON_LISTING_FEED now include a JSON patch merge operation. You can use this operation to:

• Update the quantity field within the fulfillmentAvailability without including optional fields like restock_date and lead_time_to_ship_max_days .
• Delete the quantity_discount_plan from purchasable_offer for B2B offers.

For more information, refer to Tutorial: Merge a listing and JSON_LISTING_FEED.