Issues using ST-Avalon root port on Stratix 10 MX development Kit

Hello, thank you for your answer.

I already checked many times the Pin planner and the assignment editor, and each pin is declared only one time. Unfortunately the problème is not there ...

I also tried this workaround, but it didn't work for my board : https://www.intel.com/content/www/us/en/programmable/support/support-resources/knowledge-base/component/2017/error--14566---the-fitter-cannot-place-1-periphery-component-s--.html