The following error occurs in NGDBuild:
"WARNING:Ngd:231 - PERIOD TIMESPEC '%s' has TIMEGRP '%s', which contains a mixture of PADs and synchronous elements. The PADs in this group will be exempt from analysis by the TRCE application. The ability to mix PADs and synchronous elements in a PERIOD gro+E45up will soon be obsoleted."
This warning informs you that this TIMEGRP contains pads along with synchronous elements.
NOTE: This warning will become an error in a future software version.