030

Explanation
The error occurred during processing of a basic
index sequential access method (BISAM) or queued indexed sequential
access method (QISAM) OPEN macro instruction.
The control program
found that the DCBMACRF field of the data control block (DCB) did
not indicate a valid mode of operation for BISAM or QISAM.  The DCBMACRF
field is set up by the MACRF operand of the DCB macro instruction
or by the problem program before the data control block is opened.

System programmer response
If the error recurs and the program
is not in error, look at the messages in the job log for more information.
Search problem reporting data bases for a fix for the problem. If
no fix exists, contact the IBM® Support
Center. Provide the JCL and the program listing for the job.

Programmer response
Make sure that a valid mode of operation
is specified in the MACRF operand of the DCB macro instruction.  Verify
that the DCBMACRF field was not incorrectly set up or modified by
the problem program.  After making corrections, reassemble the program
and run the job step again.

Source
DFSMSdfp