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1

I'll propose an alternative approach. Warn the user as soon as they mark multiple products of different types that they won’t be able to combine them but still allow them to be marked anyway. Assuming the process or marking and unmarking a product is quick and easy, this is better than preventing me from marking the second product. For example, if I mark ...


0

To inform a user that he did something wrong is good. To prevent the user from doing the wrong thing is always better. Highlight the items that can be selected after the first selection has been made to make it inevitable to select the "correct" items. I would try a design where the other items are selectable (not disabled), since if you leave them enabled ...


0

sounds like a product filter where the users initial choice filters possible future choices to only the type of the first choice. so the answer is to filter available options to only the type of the initial choice


5

I think you can handle this a couple ways. The system can disable or filter out the oranges when the user picks an apple. That way the system guides the user. We use a similar approach in a app where a buyer picks print options and some combinations can be incompatible, such as stapling and coil binding. If the buyer picks stapling and then tries to pick a ...


0

Does the user need to do other things in this step? If not, you can make sure the user only selects one product by continuing the process when the user selects a product. Make sure the user knows that he will be forwarded to the next step when selecting a product (I think copy will do the trick). It's always a good think to keep the back-button enable so ...



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