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Rapidminer (9.10) : Set Role - issues with assigning ID target roles for recommendation model

mutheiwana_rambmutheiwana_ramb Member Posts: 1 Contributor I

i am currently trying to build a recommendation model and the new version(9.10) of Rapidminer doesn't seem to recognise attribute roles to distinguish user & item identification. i have enclosed screenshots of my process and the exception i am getting, please assist with debugging.

Set Role Parameters:

Knn Error:

When i select "Help me solve the problem 

when i select OK, it creates another Set Role operator and the exception still doesn't clear


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