NUMBER:  51

  ERROR CODE:  F

  MESSAGE TEXT:  inconsistent file organization

  EXPLANATION:  One of the following conditions occurred:

   o  The file organization specified in an OPEN statement did not
      match the organization of the existing file.

   o  The file organization of the existing file was inconsistent
      with the specified access mode; that is, direct access was
      specified with an indexed organization file, or keyed access
      was specified with a sequential or relative organization file.