"deserialzing instances of classes (objects). if_serializable_object. CLASS-METHODS class_constructor. m01_string_xstring_conversion IMPORTING out TYPE REF TO if_oo_adt_classrun_out text TYPE string, ...

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请问我把这个函数建好了，但每次激活都会提示“REPORT/PROGRAM statement missing.or program type is I(INCLUDE)”,这个是什么原因，我的Function group 也已经指定建立好了。