When you validate your SCDS, you verify that all classes and groups assigned by your ACS routines are defined in the SCDS. To validate the SCDS:

1. Enter an 8 (Control Data Set) on the ISMF Primary Option Menu to display the CDS Application Selection panel, shown in Figure 1.
   Figure 1. Specifying the SCDS Base Configuration

     Panel  Utilities  Help                                                      
   ------------------------------------------------------------------------------
                             CDS APPLICATION SELECTION                           
   Command ===>                                                                  
                                                                                 
   To Perform Control Data Set Operations, Specify:                              
     CDS Name . . MYSCDS                                                         
                               (1 to 44 Character Data Set Name or 'Active')     
                                                                                 
   Select one of the following Options:                                          
        1. Display       - Display the Base Configuration                        
        2. Define        - Define the Base Configuration                         
        3. Alter         - Alter the Base Configuration                          
        4. Validate      - Validate the SCDS                                     
        5. Activate      - Activate the CDS                                      
        6. Cache Display - Display CF Cache Structure Names for all CF Cache Sets
        7. Cache Update  - Define/Alter/Delete CF Cache Sets                     
        8. Lock Display  - Display CF Lock Structure Names for all CF Lock Sets  
        9. Lock Update   - Define/Alter/Delete CF Lock Sets                      
   If CACHE Display is chosen, Enter CF Cache Set Name . . *                     
   If LOCK Display is chosen, Enter CF Lock Set Name . . . *                     
                                (1 to 8 character CF cache set name or * for all)
   Use ENTER to Perform Selection;                                               
   Use HELP Command for Help; Use END Command to Exit.                           

2. In the CDS Name field, type in the name of the SCDS that is to contain the base configuration. The CDS name must be the same name that you previously used for the SCDS. In this example, the CDS name is YOUR.OWN.SCDS.

   Enter a 4 (Validate) to view the Validate ACS Routines or Entire SCDS panel, shown in Figure 2.

   Figure 2. Validating the SCDS

      Panel  Utilities  Help
    ------------------------------------------------------------------------------
                         VALIDATE ACS ROUTINES OR ENTIRE SCDS
    Command ===>
   
    To Perform Validation, Specify:
   
      SCDS Name  . . . . . 'YOUR.OWN.SCDS'
                               (1 to 44 Character Data Set Name)
   
      ACS Routine Type . . *   (DC=Data Class, MC=Management Class, SC=Storage
                               Class, SG=Storage Group, *=Entire SCDS)
   
      Listing Data Set . . VALIDATE.ERROR.LISTING
                               (1 to 44 Character Data Set Name)
   
   
   
   
   
   
   
    Use ENTER to Perform Validation;
    Use HELP Command for Help; Use END Command to Exit.

3. In the SCDS Name field, specify the name of your SCDS. Enter an asterisk in the ACS Routine Type field to validate the entire SCDS.

   You can save a listing of the validation results by specifying a sequential data set name or partitioned data set member in the Listing Data Set field. If you leave this field blank, no listing is generated, so you do not see possible errors.

   You receive warning messages from the VALIDATE command if there are classes defined in your SCDS that are not assigned in your ACS routines.

   If you have storage groups defined in your SCDS that are not assigned in your ACS routines, you receive messages from VALIDATE and your SCDS is marked invalid.