Error message pops up again after right correction of input

Question

Dear experts:
I am doing a list using ALV control (OO), I put my validation logic in data changed handler. The validation is simple, to check whether a field is blank or not, if it is blank, pup up error messages and let the user to correct his/her input. But the strange thing is that after the error message firstly pops up, I close the error window,and input something in the field and press enter. No error message should be popped up. But the same error message pops up again. I debug the program found that after the first error, even I input something in the field, but the program does not get the value I input, so the same checking failed, and the error message pops up. And after the second popping up window has been closed, no further error message pops up when press Enter.
Does any1 have any idea?
Vincent
CODE:
METHOD HANDLE_DATA_CHANGED. "#EC NEEDED
DATA: LW_INS TYPE LVC_S_MOCE,
LV_FNAME TYPE LVC_FNAME,
LT_MOD TYPE LVC_T_MODI,
LW_MOD TYPE LVC_S_MODI,
LV_TEXT(10) TYPE C,
LV_MAX TYPE I,
LV_ROWID TYPE I,
LV_RES(12) TYPE C,
LW_LIST TYPE ZTSRE007.
LT_MOD] = ER_DATA_CHANGED->MT_MOD_CELLS[.
LOOP AT LT_MOD INTO LW_MOD.
IF LW_MOD-FIELDNAME = CNS_ZZTTSN.
LV_FNAME = CNS_ZZTTSN.
CALL METHOD ER_DATA_CHANGED->GET_CELL_VALUE
EXPORTING
I_ROW_ID = LW_MOD-ROW_ID
I_FIELDNAME = LV_FNAME
IMPORTING
E_VALUE = LV_RES
IF LV_RES IS INITIAL.
LV_ROWID = LW_MOD-ROW_ID.
CALL METHOD ER_DATA_CHANGED->ADD_PROTOCOL_ENTRY
EXPORTING
I_MSGID = CNS_MSGID
I_MSGTY = CNS_MSGTY
I_MSGNO = CNS_MSGNO
I_FIELDNAME = LV_FNAME
I_ROW_ID = LW_MOD-ROW_ID
ENDIF.
ENDIF.
CLEAR: LV_ROWID,
LV_FNAME.
ENDLOOP.
ENDMETHOD. "handle_data_changed
Moderator message - Cross post locked
Edited by: Rob Burbank on Sep 1, 2009 9:07 AM

Answer 1

Hi,
I am not sure how this is functioning but i am just trying to visualise your proble.
I feel that after you input the value after the first pop up of the error message; the PAI is not getting called and thats the reason why the new data is not transferred to the internal table.
What i suggest is after you input the data; press enter and check if the message is getting popped up again.
Also call the method CHECK_CHANGED_DATA in your PAI.
Just try with this. If not then probably there should be some thing else.
Can you share your code if possible??
Regards,
Ankur Parab