"ERROR:Pack:679 - Unable to obey design constraints (LOC = B14) which require the combination of the following symbols into a single I/O component: PAD symbol "RdEnFifo2_N.PAD" (Pad Signal = RdEnFifo2_N) BUF symbol "RdEnFifo2_N_obuf" (Output Signal = RdEnFifo2_N) The symbol RdEnFifo2_N.PAD has a constraint (LOC=B14) that specifies an illegal physical site for the component. Please correct the constraint value. Please correct the design constraints accordingly."
"ERROR:Pack:276 - Unable to follow packing constraints specified by the floorplanner. Refer to the error messages above to determine why the floorplan constraints are not followed. The floorplan may need to be modified."