01B

Explanation
An error occurred during RACONVRT processing; the
following hexadecimal reason codes provide further information about
the error: Code
Explanation
04
The RACROUTE macro returned an unexpected return code.
08
The RACONVRT I/O routine received an incorrect data management
request.

System action
The system abnormally ends the command.

Operator response
Notify the system programmer.

System programmer response
Obtain the JCL for the job. Obtain
the SYSOUT output for the job. Collect all printed output and output
data sets related to the problem. If the problem recurs and if the
program is not in error, search problem reporting data bases for a
fix for the problem. If no fix exists, contact the IBM® Support Center.

Source
Time Sharing Option Extensions (TSO/E)