ID:186346 Custom region "<name>" for <name> I/O pin "<name>" must encompass <name> I/O pins on device

CAUSE: You made a custom region assignment for the specified DQS I/O or DQ I/O pin, but the custom region must include a group of DQS or DQ I/O pin locations in the device.

ACTION: Modify the custom region assignment to include a group of DQS or DQ I/O pins in the device.