Accept input from conflicting data type

Hello, all.


I have here a form that accepts input from either the dropdown which gets its choices source from the data (Activity data type) or the user can manually type in the input user. The inputs should then be stored in the (Week Plan data type) that has this field Monday Activities with the field type of Activity and I’ve set this as a list.

The problem I have now is that I don’t want to add the manually inputted activity in my Activity data type. How would I go about this? There would be a conflict in the field type. The dropdown saves correct data type but in case the user wants to manually input an activity it would be text.

I’m thinking save that manual input in the Activity temporarily then delete that after adding it in the Week Plan. Or using custom states?