Skip to main content
Panel overlap constitutes a huge loss of traffic — at times over 10% of all transactions. As more respondents appear on multiple panels, exchanges, marketplaces, and aggregators see reduced conversions. The ability to track duplicative respondents before a survey attempt is a key lever in preventing this issue. /PREDUPE helps address this by leveraging APIs to signal whether a respondent has previously attempted a survey from a different panel or source.

Product Summary

  • /PREDUPE exists as an add-on to the /SEARCH API call. It lets a supplier check whether a respondent has already attempted to take the destination survey.
  • If /PREDUPE detects that the respondent has already taken the survey through another supplier, "flag": 1 will appear on the API response.
  • /SEARCH checks against duplications in the survey provided by the sy_nr parameter, while /PREDUPE checks against duplications in the survey provided by the destination_platform_survey_number parameter.

Parameters

Example API Call

Research Defender response:
If "flag": 1 appears on the /PREDUPE response, the respondent has already accessed this Project. We recommend rerouting the respondent to another opportunity.