urgent : doubt on field symbols

[Former Member]

hi friends,

i was doing a coding in which i have three internal tables without header line .

when i tried to append the details from two internal tables using field symbol into third internal table using field symbol for fpi_zmsr_output as <fl_zmsr_output>.

i am getting a error like <fl_zmsr_output> is not assigned . but i have declared the field symbols globally .

please help me, the code for that is written below

LOOP AT fpi_zmsr_a004 ASSIGNING <fl_zmsr_a004>.

READ TABLE fpi_zmsr_konp ASSIGNING <fl_zmsr_konp> WITH TABLE KEY

knumh = <fl_zmsr_a004>-knumh.

<fl_zmsr_output>-matnr = <fl_zmsr_a004>-matnr.

<fl_zmsr_output>-datab = <fl_zmsr_a004>-datab.

<fl_zmsr_output>-kbetr = <fl_zmsr_konp>-kbetr.

APPEND <fl_zmsr_output> TO fpi_zmsr_output.

reward is sure for good answers..

[Former Member]

Declare a structure same as that of the field symbol fl_zmsr_output and assign the variables to this structure initially. Then use the ASSIGN statement to assign the structure to the field symbol.

e.g:

LOOP AT fpi_zmsr_a004 ASSIGNING <fl_zmsr_a004>.
READ TABLE fpi_zmsr_konp ASSIGNING <fl_zmsr_konp> WITH TABLE KEY
knumh = <fl_zmsr_a004>-knumh.

ls_zmsr_output-matnr = <fl_zmsr_a004>-matnr.
ls_zmsr_output-datab = <fl_zmsr_a004>-datab.
ls_zmsr_output-kbetr = <fl_zmsr_konp>-kbetr.

ASSIGN ls_zmsr_output to <fl_zmsr_output>.

APPEND <fl_zmsr_output> TO fpi_zmsr_output.

This is needed because the field symbol does not get assigned when you simply use the "=" operator to transfer the values. You need to use the ASSIGN command explicitly to assign a field symbol.

Please reward points if the solution was useful.