COBCH1662 ローカル変数の定義のない、単一表現のみ指定可能である

When using the PERFORM USING statement, multiple operands can be specified provided they are specified as locals within the statement (using AS syntax). If the PERFORM USING references an item that is already declared, then only one such operand is allowed.

class-id a.
method-id m.
01 d2 type java.lang.AutoCloseable.
  perform using d1 as type java.lang.AutoCloseable = null d2
        continue
  end-perform.
end method.
end class.