The error is coming from the R Component "Remove Duplicates".
Most likely you dont need this component anymore actually. The view that you are connecting to can aggregate the data, so in essence removing duplicates.
Inage you have three columns in the table
CustomerID, ProductID, Revenue
1;A;5
1:A:12
... and many more records....
Customer Number 1 purchased the Product A twice. Apriori would throw an error with this duplicate of CustomerID and ProductID.
Now you are connecting to the view. The view can aggregate the data, it can summarise for instance the revenue. So it returns
1;A;17
Just try adding the HANA Apriori algorithm right after the data source icon.