Library /sys$common/syshlp/BASICHELP.HLB  —  Run time errors, NOTRANACC
  Not a random access device (ERR=64)

  The program attempts a random access on a device that does  not  allow
  such  access,  for  example,  a PUT with a record number to a magnetic
  tape file.  Make the access sequential instead  of  random  or  use  a
  suitable I/O device.
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