Nesting error for PERFORM

  Explanation:  The last statement the program executed was a PERFORM
  statement whose range was exited in an order that violates the rules
  for nesting PERFORM statements in COBOL programs.  PERFORM statement
  ranges must be exited in reverse order from the order in which they
  are activated.

  User Action:  Check the program logic of the PERFORM range nesting
  to ensure that the program exits from nested PERFORM ranges in the
  reverse order in which they are activated.