Two abap questions,help

[Former Member]

Hi all , I have wrote some codes ,but it show errors when it run to the last line .

The error is :You attempted to access an unassigned field symbol

could someone tell me how to solve this problem?

another question is when will SAPMM07M run ?

the codes are:

FIELD-SYMBOLS: <ITAB> TYPE ANY TABLE.

DATA: FIELD(50),

LT_MSEG LIKE STANDARD TABLE OF MSEG WITH HEADER LINE.

FIELD = '(SAPMM07M)XMSEG[]'.

IF <ITAB> IS ASSIGNED.

UNASSIGN <ITAB>.

ASSIGN (FIELD) TO <ITAB>.

ELSE.

ASSIGN (FIELD) TO <ITAB>.

ENDIF.

APPEND LINES OF <ITAB> TO LT_MSEG.

[Former Member]

HELP

[Former Member]

Hi,

SAPMM07M is not executed in your context.

SAPMM07M should be executed to capture the XMSEG.

Regards,

Srini.

[Former Member]

Hi Ling,

Where have you written the above code, is it in a User exit/Customer exit in the flow of program "SAPMM07M".

If yes, at runtime in the debug mode, enter (SAPMM07M)XMSEG[] and see if you can see the values.

Now if you have written your code in a report program and is not triggered in the flow of SAPMM07M, then your code will never work.

Because, when you say ASSIGN (FIELD) to <ITAB>, this is not pointing anywhere as (SAPMM07M)XMSEG[] is not avaialble at runtime.

And since the assign didn't work, any further reference to the Field-Symbol will fail.

APPEND LINES OF <ITAB> TO LT_MSEG.

Regards,

Chen

Edited by: Chen K V on Mar 23, 2010 9:04 AM

[Former Member]

Thanks Chen.

You are correct.

These codes come from SAP user exit.

because I dont understand what these codes mean.

I copy these codes into my report.When I run my report with these codes , SAP showed error to me.

Now , I know the reason of error.

I should run these codes in program SAPMM07M.

Thanks so much.

[Former Member]

All the Best !!!

Regards,

Chen

[Former Member]

Hi Ling Wang,

Modufy cod elike this.

FIELD-SYMBOLS: <itab> TYPE ANY TABLE.
DATA: field(50),
lt_mseg LIKE STANDARD TABLE OF mseg WITH HEADER LINE.

field = '(SAPMM07M)XMSEG[]'.
IF <itab> IS ASSIGNED.
  ASSIGN (field) TO <itab>.
  APPEND LINES OF <itab> TO lt_mseg.
ENDIF.

Regards,

Pravin