According to my uncertain memory, there was a change in PDS directory code
between zOS 1.12 and zOS 1.13. This caused PDS directory errors under certain
conditions, resulting in corrupted or lost pointers. If the affected member
was not referenced, the problem remained hidden. Unfortunately
> According to my uncertain memory, there was a change in PDS
> directory code between zOS 1.12 and zOS 1.13. This caused PDS
> directory errors under certain conditions, resulting in corrupted or
> lost pointers. If the affected member was not referenced, the
> problem
