ID:169231 Output buffer delay setting <number> (in ps) on pin <name> cannot have slew rate logic option setting <number> with I/O standard <name>

CAUSE: You assigned the Slew Rate logic option setting to the specified pin, but the specified setting is not allowed with the specified Output Buffer Delay setting for this pin.

ACTION: Assign a legal Slew Rate logic option setting to the pin or assign a different Output Buffer Delay setting.