ID:181028 Cannot place DQS <dqs_pin> in a location that can drive a <dqsbus_mode> <dqsbus_type> bus

CAUSE: The Fitter was not able to place a DQS I/O or nDQS I/O in an I/O location that can be used to drive a DQS bus in the specified mode (x4/x9/x18/x36). Constraining the DQS I/O pin to a non-DQS I/O location and failing to locate an unoccupied DQS I/O location to place the pin by the Fitter can cause this error.

ACTION: Check location constraints applied to pins in the DQS I/O group and ensure that they correspond to valid locations for a DQS I/O group in the specified mode. If modifying these constraints does not resolve this issue, check for conflicts with other pins in your design.