ID:20359 Global signal "<clock>" that feeds port "<port>" on partition "<partition>" does not have a clock region constraint.

CAUSE: Omitting a clock region constraint on the specified global signal can change the signal's clock skew when the partition is imported or preserved, which can result in a failure to preserve the timing closure of the partition.

ACTION: Constrain the clock source to a clock region. In the Assignment Editor, add a \"Clock Region\" constraint to the clock source. Alternatively, add the CLOCK_REGION assignment setting to the QSF file.