Hi all - Thanks for reading! 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.

Just checking, cant we use "ResponseID" embedded data which always unique for each survey record.However, this won't be 6 digit number... ResponseID is alphanumeric and always unique for each record in a survey.

@twray,You need to keep track of which numbers have been used. It would be best to use a web service for that. For example, you could:1. Set up a one field database table with the numbers 100000 through 999999 as records.2. Have your web service script grab a random record, delete the record it just grabbed, and output the number it grabbed in a json string.

More details needed to generate random number with no repeats. Any solution yet?

More details needed to generate random number with no repeats. Any solution yet? | Experience Community

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