Hello helpful people!
I was wondering if there is a way to make sure that within a repeated set of questions each answer taken from a select_one choice can only be chosen once. For example: I want to know the numbers of fruit trees on a farm. I have a select_one field with a predefined list of possible fruit trees (plus other) so the user can select the type of tree and tell me the number. But I want to make sure that they cannot give the numbers for one type twice. So if they have chosen apple before they cannot chose it again in the next repeat. Is that possible?
Currently Survey123 does not support analysis/validation across repeats. In particular, either the indexed-repeat() or position() functions would be needed to implement this workflow.