Table control - Field statement - Value reset

[Former Member]

Hi Experts,

In my table control, I want to validate a field.

In PAI,

I am using

loop at i_vbap.
  module update_changes.
  field: zvbap-tdline module check_input.
endloop.

the field zvbap-tdline is always blank in this case.

Where as when I was using just

loop at i_vbap.
  module update_changes.
endloop.

I was getting the screen values transferred correctly to my internal table.

But now this particular field value comes blank when I use it with field. I want to throw an error message if the user has kept this field blank.

Thanks,

Abdullah Ismail

[Sandra_Rossi]

With table controls, you must use LOOP ... WITH CONTROL ... statement, see abap documentation, or ABAP examples in SE38 | environment | examples | abap examples

[Former Member]

hi Abdullah Ismail ,

along with the above suggestion i would just like to add a point..

use table control WIZARD in the screen painter to create table control.. you will be getting a standardized code to work with ..

[venkat_o]

Hi Abdullah, <li> If you are using i_vbap table data to display on table control and zvbap-tdline is the field on table control then, your LOOP-ENDLOOP should be like below.

LOOP AT i_vbap INTO zvbap."INTO zvbap has been added
MODULE update_changes.
  field: zvbap-tdline module check_input.
ENDLOOP.

<li>If i_vbap has header also and using on table control, you need to use like below.

LOOP AT i_vbap.
MODULE update_changes.
  field: i_vbap-tdline module check_input."zvbap-tdline changed to i_vbap-tdline
ENDLOOP.

Thanks Venkat.O

[Former Member]

Hi,

First do the check then use update operation.

The reason you are getting blank value is because of the FIELD statement coming after "module update_changes."

Change the coding as below and try

loop at i_vbap.
  field: zvbap-tdline module check_input.
  module update_changes.
endloop.

Regards