CWSXB2303E The default WebSphere Service Registry and Repository (WSRR) definition cannot be deleted.

Explanation
The default WSRR definition can be deleted only if it is the last WSRR definition in the cell.
User response
Set another WSRR definition as the default and then delete this one. You can find the process to set a default WSRR definition at http://publib.boulder.ibm.com/infocenter/dmndhelp/v6rlmx/index.jsp?topic=/com.ibm.websphere.wesb610.zseries.doc/tasks/twesb_setdefwsrr.html and the process to delete a WSRR definition at http://publib.boulder.ibm.com/infocenter/dmndhelp/v6rlmx/index.jsp?topic=/com.ibm.websphere.wesb610.zseries.doc/tasks/twesb_deletewsrrdef.html