ID:186035 Can't place fast PLL "<name>" because it drives <number> differential <name> I/O nodes -- target device can support maximum of <number> differential I/O nodes per fast PLL

CAUSE: You selected a target device for the current project. However, the Fitter cannot place the specified fast PLL because it drives too many differential I/O nodes.

ACTION: Select a larger device, or modify the design to reduce the number of differential I/O nodes driven by the fast PLL.