Hello ! I need your help! I want to extract all my elements from Revit to Excel, but if I have Multilayer elements, the material linked elements won’t correspond to the extracted element. As shown in the linked picture and so I can’t get a proper extraction. All my element linked parameter will follow the extraction sequence, but all the material linked parameters will not fit to the element. 
Is there a possibility to counter this problem? by adding “blank spaces” in form of a loop ? I am not very good at programming.
Can you show your graph?
Number of type and ID same. but the material name not So, you need to verify that. if one floor have multiple material you need group the material by type. try to use group by key node.
I know that , it is because some of my elements have only on material (like on the picture the Yellow and the Green one) and some have more than one material (like on the picture the Blue and Orange one which both have two materials). My goal is to have an extraction like on the right side on this picture:
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But , I don’t know how to do it. I tried with the group by keys but I don’t get it.
can you sample file so that i can try?
I’m sorry I can’t send you the file, but I made a small example in which the problematic is the same. I hope it is okay.Project1.rvt (404 KB) test.dyn (12.0 KB)
But the problem is then that I can’t have material linked parameters next to the corresponding material…
I would like to have something like the bottom part
Thank you ! this is a good possibility to counter the problematic.
Still thinking if there is a possibility to make it more visually easier to understand as shown in my previous picture .