ID:16770 The clock buffer cannot drive the required destination ports without violating partition boundaries. Modify your design to instantiate a clock buffer that drives the required global destination ports without violating partition boundaries.

CAUSE: The Fitter cannot move the mandatory global destination ports to an existing clock buffer without violating partition boundaries. This error can occur when the signal source has both required global and non-global fanout and the split point occurs further downstream in hierarchy than an existing clock buffer.

ACTION: Modify your design to instantiate a clock buffer that drives the required global destination ports without violating partition boundaries. Alternatively, you may be able to work around this error by duplicating boundary ports such that each boundary port has only global or non-global destination ports, but not both.