DFSMSdss handling of the data-set-changed indicator during restore

When restoring a data set, understand that the value of the data-set-changed indicator depends on several factors, such as whether you invoke DFSMSdss directly or through its Application Programming Interface (API), and whether you rename the data set during the restore operation.

Table 1 shows how DFSMSdss handles the data-set-changed indicator in each of these situations.

Table 1. DFSMSdss handling of the data-set-changed indicator during data set restore operations.
How is DFSMSdss invoked?	Is the data set renamed?	Result
Invoked directly to restore the data set.	No	DFSMSdss sets the data-set-changed indicator in the VTOC to the value the data set had when it was backed up.
Invoked directly to restore the data set.	Yes	DFSMSdss turns off the data-set-changed indicator for the data set because it is newly allocated.
Invoked by an application through the DFSMSdss API.	No	DFSMSdss leaves the data-set-changed indicator unmodified, so that other backup applications can continue to track the data set.
Invoked by an application through the DFSMSdss API.	Yes	DFSMSdss leaves the data-set-changed indicator unmodified, so that other backup applications can continue to track the data set.