DFS3295A READ BACKWARD NOT ALLOWED FOR BACK OUT FROM IMS CHECKPOINT

Explanation
Batch Backout is executing with the READBACK option. At an IMS checkpoint, Batch
Backout encountered a UOR and attempted to back it out. However, Batch Backout
did not find the original log records for that UOR.

Batch Backout cannot use the read-backward technique to perform a backout
from the information in the system checkpoint. Batch Backout terminates without
performing a backout.

Programmer response
Do either of the following:  

Remove the READBACK statement from the SYSIN data set. Batch Backout will
perform the backout by buffering the changes in virtual storage.

In the input to Batch Backout, include the log data set that was active
when the application needing backout was run.