pin planner issue with cyclone IV E EP4CE55F23C6N (484 FBGA)

:(

I used pin planner to assign the pins.

But the conflict result is generated as attached image.

They are on different bank and I/O live check is passed.

What is the problem?

https://www.alteraforum.com/forum/attachment.php?attachmentid=6702

https://www.alteraforum.com/forum/attachment.php?attachmentid=6704 https://www.alteraforum.com/forum/attachment.php?attachmentid=6703

Any suggestions are appreciated.