DFS1083A SYSIN COULD NOT BE OPENED

Explanation
 The Sequential Buffering (SB) test program (DFSSBHD0)
was unable to open the //SYSIN data set. This message follows z/OS® messages describing why the
error occurred.

System action
 IMS abnormally
terminates the SB test program.

User response
 Make sure that the //SYSIN DD statement defining
the data set for the test program is present and correct. See the
messages issued by z/OS as
well.