How to analyze whether a code entered in the text field is in the list of choices?

[Kal_Lam]

Welcome back to the community, @LAFS! Maybe this post discussed previously should help you solve your issue:

Autocomplete

Hi @carlos_diaz1978, you can try something like this with the search() appearance on select_-type questions. survey type name label appearance select_one fruits fruit Fruit search() choices list_name name label fruits apple Apple fruits banana Banana fruits pineapple Pineapple fruits grape Grape fruits orange Orange [search]