ID:21194 Clock Buffer Block "<name>" with clock_type "Auto" is automatically promoted to "Global Clock" because the ENAOUT port is connected.

CAUSE: The ENAOUT port of the Clock Buffer Block only exists in the physical implementation for Global Clock buffers. The clock_type has been changed from Auto to Global Clock to ensure that the Fitter chooses a Clock Buffer Block that supports the required connectivity.

ACTION: Modify the design so that the ENAOUT port is not connected, or set the clock_type attribute of the Clock Buffer Block to Global Clock.