In order for the enterprise server to accept the transaction, you need to define a listener for 3270 terminals.
	 
 
		- In the table of servers on the Home page of Enterprise Server Administration, click 
		  Details in the Communications Processes cell for the server to which you want to add the listener. 
		
 
 
		- Click 
		  Add in the Listeners column for the communications process to which you want to add the listener. 
		
 
 
		- In the 
		  Name field, specify a suitable name (for example, 
		  tn3270). 
		
 
 
		- Allow 
		  Endpoint Protocol to default to TCP. 
		
 
 
		- In 
		  Endpoint Address), set the port number for the listener to 
		  *.nnnn, where 
		  nnnn is a port number. You can use any number above 5000 that isn't in use. 
		
 
 
		- In the 
		  Supported Conversation Type group, click 
		  TN3270. 
		
 
 
		- Click 
		  Add. 
		  
The Communications Processes page is redisplayed showing that the listener was added. 
		  
 
		 
 
		- Click 
		  Home. 
		
 
 
		- Stop the enterprise server. 
		
 
 
		- Restart the enterprise server. 
		  
This has the effect of starting the listener.