Generically typed data reference variable giving dump

[Former Member]

Hi

Could you please help me to understand the following behavior of data reference variable:

Case 1:

DATA: ls_flight TYPE sflight,

      lr_flight TYPE REF TO data.

FIELD-SYMBOLS: <lfs_flight> TYPE sflight.

ls_flight-carrid = 'AA'.

ls_flight-connid = '2157'.

GET REFERENCE OF ls_flight INTO lr_flight.

ASSIGN lr_flight->* TO <lfs_flight>.

Case 2:

TYPES: BEGIN OF ty_vbap,

        vbeln TYPE vbap-vbeln,

        posnr TYPE vbap-posnr,

       END OF ty_vbap.

DATA: it_vbap TYPE STANDARD TABLE OF ty_vbap,

      dref TYPE REF TO data.

FIELD-SYMBOLS: <fs_vbap> TYPE ty_vbap

SELECT vbeln posnr FROM VBAP INTO TABLE it_vbap UP TO 10 ROWS.

GET REFERENCE OF it_vbap INTO dref

ASSIGN dref->* TO <fs_vbap>.

Here CASE 1 is executing as expected while CASE 2 is giving dump for ASSIGN dref->* TO <fs_vbap>.  I do not really understand why CASE2 is giving dump( exception : ASSIGN_TYPE_CONFLICT, You attempted to assign a field to a typed field symbol, but the field does not have the required type).

Is user defined types played a role here? or Am I missing something obvious ?

[PeterJonker]

In the first assignment field symbol and data are a structure. In the second assignment you try to assign a table to a structure.

Change the code as follows:

TYPES: BEGIN OF ty_vbap,

        vbeln TYPE vbap-vbeln,

        posnr TYPE vbap-posnr,

       END OF ty_vbap,

tt_vbap type standard table of ty_vbap.

data it_vbap type tt_vbap.

FIELD-SYMBOLS: <fs_vbap> TYPE tt_vbap

[Former Member]

I think sometimes my mind works  in a mysterious way.

I am feeling bad for myself to post such a silly question. Lack of experience might be the reason.

Anyhow, thanks for the response.