Make EKKO-ZTERM non editable in ME21N ME22N

[maria_merino]

Hi experts,

is it possible to make non-editable field EKKO-ZTERM in ME21N and ME22N depending on a condition? I'm triing to do it in IF_EX_ME_PROCESS_PO_CUST~FIELDSELECTION_HEADER but I don't know how.

thanks in advance,

Maria

[Abinathsiva]

Hi,

instead try method PROCESS_HEADER

[MateuszAdamus]

Hi maria.merino

I read the BADI documentation and debugged a bit and here is what I found out.

In the FIELDSELECTION_HEADER method of the BADI you need to assign the field ID and display option:

• '-' Field is suppressed

• '*' Field is purely a display field

• '.' Input field

• '+' Mandatory field

You can find the field IDs in the type pool MMMFD.

In the method of your the BADI code should look something like this.

TYPE-POOLS:
  mmmfd.

DATA:
  ls_field_selection TYPE mmpur_fs.

  ls_field_selection-metafield = mmmfd_pmnttrms.
  ls_field_selection-fieldstatus = '*'. " display
  INSERT ls_field_selection INTO TABLE ch_fieldselection

However, the issue is that this method is called only if there is a custom field on one of the tabs of the header screen (custom fields tab). You can see this in function MEPOBADI_FS_HEADER.

The MMMFD_CUST_01 is defined as follows.

The method is commented as a firewall, as it's supposed to prevent from changing standard fields' attributes, but once you get the BADI method to be called, the logic I showed works. The filtering part does not prevent from anything, except the BADI method being called.

To add this custom screen with custom fields you need to implement BADI ME_GUI_PO_CUST and in that BADI add new screen to the transaction.

You can check examples prepared by SAP, both for ME_GUI_PO_CUST and ME_PROCESS_PO_CUST BADIs:

- CL_EXM_IM_ME_GUI_PO_CUST

- CL_EXM_IM_ME_PROCESS_PO_CUST

Hope this helps.

Regards,

Mateusz

[MateuszAdamus]

Hi

Another way would be to dynamically select a screen variant prepared beforehand (with the field disabled).

This can be done in method FIELDSELECTION_HEADER_REFKEYS of ME_PROCESS_PO_CUST BADI.

IF condition = abap_true.
  ch_key0 = 'SOME_SCREEN_VARIANT_NAME'.
ENDIF.

Regards,
Mateusz