Verify that the CFRM active policy correctly specifies the coupling facility that is to be used by this sysplex and ensure that the sysplex identified in message IXC500I is stopped from using the coupling facility before responding to this message. If Y (yes) is specified, this system will issue message IXC559I to ensure that the operator is made aware of the need to prevent another sysplex from using the coupling facility, and then message IXC560A to prompt for confirmation before allowing this system to gain ownership of the coupling facility. Messages IXC500I and IXC559I identify the coupling facility and the sysplex that currently owns it. Note that a reply of Y to this prompt and a reply of Y to message IXC560A may cause severe errors if the coupling facility is still being used by the sysplex identified in messages IXC500I and IXC559I. If N (no) is specified, the coupling facility will not be used by this system.