Enterprise Developer 2.3 requires an installation of 
		z/Server version 2.3 (V2R3) or higher. 
	 
 
	 Before upgrading an existing installation of 
		z/Server of a version earlier than version 2.3, Micro Focus recommends that you install 
		z/Server 2.3 on separate ports, and test this with AWM in 
		Enterprise Developer 2.3: 
	 
 
	  
		- Install 
		  z/Server 2.3 on ports separate from your current installation of 
		  z/Server. Keep the existing 
		  z/Server as the productive server installation. 
		
 
 
		- Install 
		  Enterprise Developer 2.3 and ensure that all server connections point to the 
		  z/Server 2.3 installation. 
		
 
 
		- Test your remote AWM models against the server. For example: 
		  
 
			 - Test whether you expanding your defined data set filters works in MVS Explorer. 
			 
 
 
			 - Try to duplicate and delete a member in a PO data set. 
			 
 
 
			 - Edit and save a sequential MVS file or a member of a PO data set from the MVS Explorer. 
			 
 
 
		  
 
		 
 
		- After all tests have successfully passed, roll out 
		  Enterprise Developer 2.3 across your organization. 
		  
AWM in all installations should point to the 
			 z/Server 2.3 installation. 
		  
 
		 
 
		- When all 
		  Enterprise Developer installations have been upgraded successfully, the tasks started by the earlier version of 
		  z/Server can be deactivated or uninstalled.