ID:186075 Can't place differential I/O PLL "<name>" at location <name> that does not support the differential I/O functionality

CAUSE: You assigned the specified differential I/O PLL to a location. However, the Fitter cannot place the PLL because the location assignment does not support the differential I/O functionality.

ACTION: Reassign the PLL to another location that does support the differential I/O functionality, or delete the assignment.