ID:176477 Can't place all delay locked loop (DLLs) or DQS I/O pins

CAUSE: The Fitter could not place all of the delay locked loop (DLLs) or DQS I/O pins in the design. Click the + icon to expand this message in the Messages window or in the Messages section of the Report window to display details on why the Fitter could not place the DLLs or DQS I/O pins.

ACTION: Modify the design so the Fitter can place the DLLs or DQS I/O pins.