Is there an equivalent to the "de-duplicate" function in Surveycto?

[Kal_Lam]

@jscorrea, this post discussed previously should help you solve your issue:

Restrict choices already selected from a repeat group

Hi @an_ju, Have you considered using a choice filter rather than constraints? Here’s something that might work for your situation: survey type name label calculation choice_filter calculate c1 concat(${visit}) begin_repeat visits Visits calculate c2 substr(${c1}, 0, position(…) - 1) select_one visits visit Visit not(contains(${c2}, name)) end_repeat choices list_name name label visits 0 Visit 3A visits 1 Visit 3B visits 2 Visit 3C choice-filter-re…