I know this question has been asked several times already (e.g., https://www.qualtrics.com/community/discussion/85/i-want-to-randomly-assign-a-4-digit-id-to-every-respondent-with-no-repeats), but thought I'd check in again about this to see if someone could provide a more specific answer, since this _has_ to be a need that many people have.
I want to assign a random 6-digit number as a respondent enters a survey, but it's _essential_ that there be no repeats. I know Qualtrics' random number generator can do this, but can't guarantee it won't repeat. So, several others have suggested setting up a web service or library to do this. But can anyone provide more details about exactly how to do this?
There has to be a solution out there, and I think it'd be really helpful to a lot of people to post it here.
Best answer by MohammedAli_Rajapkar
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