IEB511I

Explanation
Required DD statement does not exist or the OPEN
macro instruction failed for the file specified by the DDNAME.
In
the message text: ddname
The DDNAME.

System action
The job is ended.

Programmer response
Either correct the DDNAME, if it is misspelled
in the DD statement, or insert a new DD statement with the correct
name and JCL parameters and resubmit the job.

Source
DFSMSdfp

Routing code
11

Descriptor code
7