Display Ads (YDN) Dynamic Ads for Display enhancements

*Updates:
March 12, 2020:
This enhancement has completed as scheduled.
Due to associating the Item set to an ad groups be mandatory, "isRemoveFeedSetId" has become unavailable in AdGroup object of AdGroupService.
Previous notification did not mention this change, and we apologize for any inconvenience this may cause.
February 27, 2020:
Announced the release schedule.
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Document Number: APIE-FY19-2102

Dear customer,

Thank you for using Yahoo! Ads.

We will make some enhancements on Dynamic Ads for Display for
Yahoo! Ads Display Ads (YDN). Please see the following details.

Once again, thank you for using Yahoo! Ads.


1. Product:
 Yahoo! Ads Display Ads (YDN)

2. Schedule:
 March 12, 2020 (Thu) JST
 *Schedule may change without prior notice.

3. Overview:
 We will make the following enhancements on Dynamic Ads for Display for
 Display Ads (YDN).

 - Deleting items with partial updates will become available for the
  Item list
  To delete items from the Item list, add a "Delete" column to the
  Item list file and update partially.
  * Currently, you need to update all Item list to delete items.

 - Number of Item list uploads will increase
  All updates and partial updates will be separately counted when
  uploading the Item list.
  Currently, the uploads are counted regardless of all or partial
  updates. By separating these updates, the maximum number of uploads
  will increase after the release.

 - Available character code and line feed code for the Item list file
  will be added
  Character code "Shift JIS" and line feed code "CRLF" will become
  available for the Item list file.
  The latest Item list template will support these character code and
  line feed code. Download the Item list template after the release.

 - Associating the Item set to an ad groups will become mandatory
  The ad groups under the Dynamic Ads for Display campaign must be
  associated with the Item set.
  For API, when the Item set is not associated to ad groups, the system
  associates the default Item set.

 - Item list will be updated in real time * For API only.
  By requesting mutate(SET) of "FeedItemService", the real-time updates
  will support frequently-updated items such Display setting and In Stock.
  You can deliver ads that are flexible to product status such as prices
  and stocks.
  Version of API are as follows.
   - Yahoo! JAPAN Promotional Ads API (YDN API) V201911
   - Yahoo! Ads Display Ads API v1

4. Remarks:
 Dynamic Ads for Display is an ad distribution provided only for specific
 advertisers. When it is available, "Item List" appears in the "Tools"
 tab in the campaign management tool. Learn more on the following help page.
  What is Dynamic Ads for Display
  https://ads-help.yahoo.co.jp/yahooads/ydn/articledetail?lan=en&aid=22319


If you have any questions, please contact us.

Sincerely,
Yahoo! JAPAN API support team