LY Ads API | Developer Center

2026/03/12

Display Ads: Changing specifications for conversion value in conversion tracking

Updates

March 12, 2026: This article was updated in conjunction with this implementation.
March 6, 2026: Part of the content in "Changes to Performance Report/Performance Data" was revised.
February 24, 2026: Publication of this article began.

Product

Yahoo! JAPAN Ads Display Ads

Schedule

March 11, 2026 (Wed)

Summary

The specifications for "Conversion value" in conversion tracking for Display Ads have been changed. Please refer to the next section for details.

Details of Changes

Changes to Conversion Tracking Settings

• For the conversion type "App," it is now possible to set the "Value per conversion."

• For each conversion type, it is now possible to set the "Value per conversion" up to two decimal places.

Changes to Conversion Tracking

• When measuring the following conversion types, decimal values in the conversion path will now also be measured.
  • Web
  • Web (Tracking tag)
  • App
  • Import

• When measuring conversion value, if the conversion value cannot be obtained from requests via tracking tags or third-party ad measurement tools, the "Value per conversion" set when configuring conversion tracking in the Campaign Management Tool will be used. As a result, the figures in Performance Report/Performance Data may increase after this implementation.
  If the conversion value is linked as "0" via tracking tags or third-party ad measurement tools, it will be recorded as "0."

Changes to Performance Report/Performance Data

• In the Performance Report of the following Tools, the display format of the relevant metrics has been changed. The display format of Performance Data remains unchanged.
  [Revised on 2026/3/6] Campaign Editor and Yahoo! JAPAN Ads Display Ads API have been removed from the applicable Tools.
  For the Display Ads API, the changes are scheduled to be applied sequentially in future versions.
  
  

  Tools

  • Campaign Management Tool
    
    

  Metrics

  • Conv. value (incl. view-through)
    *Conversion path report
  • Conv. value (all)
  • Conv. value (via click)
    
    

  Display Format
  Before: Integer only
  After: Up to two decimal places
  
  

• Due to this implementation, the figures in Performance Report/Performance Data may fluctuate; however, there is no impact on the measurement itself.

Impact on Yahoo! JAPAN Ads Display Ads API

Applicable Version

v19

Applicable Web Services

• YdnConversionTrackerService/add
  ・userRevenueValue
• YdnConversionTrackerService/set
  ・userRevenueValue

Details of Changes

It is now possible to set the "Value per conversion" up to two decimal places (including App conversion tracking).