ID:176521 Can't place DLL "<name>" due to incompatible location assignments

CAUSE: The Fitter could not place the specified delay locked loop (DLL)s in a legal location. The location assignments on I/O related to the DLL (for example, location assignments on DQS I/O, nDQS I/O, DQ I/O, or DLL inclk I/O pins, the phase-locked loop (PLL) that feeds the reference clock of the DLL, or the DLL itself) have incompatible location assignments. The location assignments on these I/Os implicitly constrain the DLL to the specified location. Therefore, the Fitter could not find a legal location to satisfy all the location assignments of the related I/Os. Click the + icon to expand this message in the Messages window or the Messages section of the Report Window for more information on the location assignments of the related I/Os.

ACTION: Remove the incompatible location assignments on the appropriate related I/Os.