{
{      The purpose of this request is to determine if the desired
{ service is provided on any of the configured LCN hosts.
{
{   RFP$FIND_AVAILABLE_SERVICE(SERVER_NAME, DESTINATION_HOST,
{   HOST_IDENTIFIERS, NUMBER_OF_HOSTS, STATUS);
{
{ SERVER_NAME: (input) This parameter specifies the name of the server
{   application which provides the desired service.
{
{ DESTINATION_HOST: (input) This parameter specifies the name of
{   destination host where the server must reside.  The user may specify
{   a logical identifier or a physical identifier.
{
{ HOST_IDENTIFIERS: (output) This parameter is an array which contains
{   the identifier of each host that provides the desired service.
{   This is a fixed array of length rfc$max_available_hosts.  If the
{   user specified a logical identifier, the identifiers of all hosts
{   that provide the desired service (up to rfc$max_available_hosts) are
{   returned in this array.  This parameter is not meaningful if the
{   user specified a physical identifier and the status is normal.
{
{ NUMBER_OF_HOSTS: (output) This parameter specifies the number of hosts
{   which provide the desired service.  If the value is less than or equal
{   to rfc$max_hosts_available, this value represents the number of
{   elements returned in the HOST_IDENTIFIERS array.  If the value is
{   greater than rfc$max_hosts_available, the number of elements returned
{   in the HOST_IDENTIFIERS array is rfc$max_hosts_available.  This
{   parameter is not meaningful if the user specified a physical identifier
{   and the status is normal.
{
{ STATUS: (output) This parameter returns the result of the request.
{   A status of normal means an accessible LCN host is available to
{   provide the requested service.
{      CONDITIONS: rfe$destination_host_disabled
{                  rfe$destination_host_undefined
{                  rfe$path_to_remote_undefined
{                  rfe$paths_to_destination_down
{                  rfe$remote_server_undefined
{                  rfe$system_task_not_active
{      IDENTIFIER: 'RF'
{
