I do not need to duplicate Code in my data .
for example if I entered Code number ( 3 ) in the next form i need to notify me if i entered code before .
Hello @RamiNagy,
If you don't plan on sharing the form publicly one option would be to use a custom JavaScript function to query the feature service the survey is pointing to and see if the value exists in the data. We have a sample in Survey123 Connect that demonstrates querying feature services using JavaScript functions.
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