435

Explanation
SVC 53, which obtains and releases exclusive control
of a resource associated with a BDAM data set found that: The DEB pointed to by the input DCB (DCBDEBAD) was not on any
DEB chain associated with the job step TCB, or did not point back
to that DCB, or was not for a BDAM data set.
The IOB has been altered by other than a system routine.

System programmer response
  If the error recurs and 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.

Programmer response
Make sure that the input DCB address is
correct and that the DCBDEBAD field of the input DCB has not been
overlaid.

Source
DFSMSdfp