The following message is issued when the Coupling Facility structure entry utilization has gone over 75 percent.
The warning is reissued whenever utilization changes by at least 5 percent.
TSS9746I - C.F. XES Str(str_name) is now 075% full
What happens if the XCF-Structure becomes full?
The XCF-Structure is cleared and reinitialized
For more information about sysplex TSS control option refer to: Top Secret for z/OS Control Options Guide