SOCKNOTFND, Socket xxxx not found
Run Time Error: This error is issued:
On CLOSE when SOCKET=xxxx is used to specify which socket to close.
On USE:
DETACH=xxxx when the specified socket in not in the current Socket device.
ATTACH=xxxx when the specified socket is not in the socketpool.
SOCKET=xxxx when the specified socket is not in the current Socket device.
Action: Make sure the socket is created before an I/O operation attempts using it.
