ID:16685 Hard IP for PCI Express block < <name> > has only two channels associated with it, therefore it can only support x1 and x2 channel placement. Modify your design to use x1 and x2 channel placement or select a larger device.

CAUSE: Your design specifies channel placement other than x1 or x2 for the specified Hard IP for PCI Express block, however x1 and x2 are the supported only channel placements for the number of channels associated with the Hard IP for PCI Express block.

ACTION: Modify the design to use only x1, or x2 channel placement, or select a larger device.