BSY0112E Unauthorized data set found in `region type` region STEPLIB concatenation

Explanation
 IMS Recovery Expert detected
that one of the libraries in the IMS region
type region for the specified IMS system
is not APF authorized on the system IMS Recovery Expert is
running on. 

User response  Authorize all of the libraries in the STEPLIB concatenation
of the specified region on the system where IMS Recovery Expert is
running.