Step & contains invalid data

What causes this issue?

The job step indicated in the message contains invalid data. For
example, the ABAP/4 program or variant in the message may not have been
found, the authorizations user for the job step may be missing, etc.

System Response

No action taken.

How to fix this error?

If you are working in dialog mode, then the system displays the job
steps in the job. The faulty job step is highlighted. Check that the
values specified in the job step are complete and valid.
Otherwise, the function has been terminated. You should check the
<DS:TRAN.SM36>job steps</> in the job by hand.

Error message extract from SAP system. Copyright SAP SE.