ID:16767 Can't insert required clock buffer at node "<node>" as the partition is read-only. Unlock the partition to allow the clock buffer to be inserted.

CAUSE: The Fitter cannot insert a clock buffer at the specified node because the partition where it attempted to insert the clock buffer is read-only.

ACTION: Unlock the partition to allow the clock buffer to be inserted. Usually you must unlock the highest-level partition that is legal for the clock buffer. If possible, you can also insert the clock buffer in an unlocked, lower-level partition without changing the read-only property of the highest-level partition by manually instantiating a clock buffer in the HDL at the appropriate level of hierarchy.