Error during ACCEPT from default input device

  Explanation:  The data you entered in response to an ACCEPT WITH
  CONVERSION statement, which did not include an ON EXCEPTION phrase,
  caused a conversion error.  The data in question was not properly
  formatted for the data type of the data-item you entered.

  User Action:  If you want your program to handle incorrectly
  formatted data, add an ON EXCEPTION phrase to the ACCEPT statement.
  When the ON EXECEPTION phrase executes, your application can take
  the necessary corrective action.