Preventing regression of SYSMODs in APPLY-only status by an IMS system definition

Maintenance might be regressed if an IMS system definition is performed when maintenance is in APPLY-only status.

You can use one or the other of the following methods to prevent SYSMODs in APPLY-only status from being regressed by an IMS system definition:

Before the system definition, ACCEPT all PTFs in APPLY-only status.
Perform the system definition, allowing the SYSMODs in APPLY-only status to be regressed, and then reprocess the SYSMODs.

Identify the SYSMODs in APPLY-only status by using the following SMP/E statements to list the SYSMODs in APPLY-only status:
```
   SET BOUNDARY (targetzone).
   LIST APAR PTF USERMOD NOACCEPT NOSUP.
```
Method 1:
1. ACCEPT all PTFs in APPLY-only status before system definition.
2. Restore all APARs and USERMODs.
3. Run stage-1 and stage-2 system definition.
4. Reapply APARs and USERMODs, if needed.
Method 2:
1. Run stage-1 and stage-2 system definition.
2. Reprocess (APPLY) the SYSMODs that you identified previously. The following example SMP/E statements can be used to reprocess SYSMODs in APPLY-only status:
  Attention: Use the NOJCLIN parameter only to process REDO. Otherwise, you might not be able to RESTORE the service.
```
    APPLY REDO NOJCLIN SELECT( 
                              xxxxxxx 
                              xxxxxxx
                              xxxxxxx 
                                     )   .
```
  In the preceding example, the xxxxxxx fields represent the list of each SYSMOD that was in APPLY-only status before you performed system definition.
  
  Attention: Some SYSMODs in APPLY-only status might require special handling for HOLDs that require either a system definition or a DELETE. Follow the instructions in the HOLD statements for those SYSMODs.