Procedure libraries are partitioned data sets that contain procedures that can be specified in JCL jobstreams. 
               		MSS searches for the JCL procedures executed via an EXEC statement in the following order: 
               	 
            
 
            	 
             
               		
               - In-stream procedures. 
                  		
               
-  Libraries specified on a 
                  		  JCLLIB statement in the JCL. 
                  		  
                  You must allocate these libraries to the catalog. 
                     		  
                   
-  The libraries that you specified when you enabled JCL Support. This can be performed in 
                  		  ESCWA:
                  		  
                   
                     			 
                     - In the menu bar, click 
                        				Native. 
                        			 
                     
- In the navigation tab, click 
                        				Directory Server and then select the 
                        				enterprise server region. 
                        			 
                     
- Click 
                        				. 
                        				
                        This takes you to the 
                           				  JES Configuration page. 
                           				
                         
- In the 
                        				System Procedure Library field, type the libraries.
                        			 
                     
- Click 
                        				Apply. 
                        			 
                     
 Note: This change will be applied next time the 
                     			 enterprise server region is restarted.