In order to detect all the changes, the z/OS solution provides specific jobs that must be scheduled and executed. These operations
               are grouped into three phases: 
               
               
 
                  
                  -  Changed Data Stores Identification (reading the IMPSRC file) 
                     
                  
-  Changed Data Elements Identification
                     
                  
- Apply Identified Changes
                     
                  
Note: For all phases, data stores are processed at the moment the phase is launched.