As I am getting a list of text strings separated by semicolons in a single line, my focus is to split them into different values. After that, I need to convert them to users using the touser() function. However, it is currently showing [ID NOT FOUND] even though the email address is already present in Appian users.
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I think the issue is that you defined the rule input as a list of text, but then pass ONE string that contains two items.
While your point is valid I have doubts on whether that is the issue here.
Appian seems to adjust to it.Testing the setup does produce 2 proper items for the forEach loop..