Definition of 0P23


Cause: Unit check (no record found or missing address marker on three adjacent tracks). The
2321 has accessed an uninitialized strip.
Programmer Action: Display the label cylinder or check the EXTENT (XTENT) cards for
correct parameters. If the seek address is outside these parameters, correct the seek. If
strip(s). should be accessed, re—initialize the strip(s) using the initialize data cell program.
If the problem recurs issue the ROD command, execute EREP (see DOS/VS SADP), and have
· output
· job stream
· program listing
· log sheet
· printer output
available for problem determination.
If the standard (permanent) labels were used, execute LSERV (see DOS/VS SADP) and have
the output available.
Operator Action: See Figure 4 at the beginning of this section.

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