Is there a way to block same zip codes using the contact list? | XM Community
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Hi folks,
We’re doing a long survey where participants have to enter their zip code and email address so they can be reached out at a later stage. However, we want to block same entries (same email address or postcodes) any idea how to do this using the contact list?

Assuming distribution is through anonymous link.Create a contact list trigger with email as email and post code in external data reference. In the survey flow add authenticator after the email address and post codes question. Create an embedded data ("auth") before authenticator and set it value to 0. If authenticated then update the value of auth=1. Now outside/below authenticator, add branch logic - if auth=1 then EOS

rondev when I do it and I add an end of survey under the authenticator, the authenticator flags up and says sorry you completed the survey but then it moves on to the next questions, any way to direct them to the end without seeing the rest of the questions?

Thanks a lot for the help
Vassilis

Rather than having EOS under autherticator, set an ED to some value and outside authenticator check the value of that ED and take decision for EOS. (Check the previous edited comment.)

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