Adding customer (Z-) fields to Purchase Orders

In this document a step-by-step guide for adding customer (Z-) fields to Purchase Orders that are displayable and modifiable either in header level or in item level.

We start by adding enhancement MM06E005 to a project in transaction CMOD and activating it.

We create structures CI_EKKODB (header level) and/ or CI_EKPODB (item level) by double-clicking on the corresponding line under “Include tables”, and add to them the fields that are of interest to us, e.g. ZZFIELD1 and ZZFIELD2 respectively. We save and activate.

We create screens SAPLXM06 0101 (header level) and/ or 0111 (item level) by double-clicking on the corresponding line under “Screen exit”, and add the customer fields defined in the previous step using the structures CI_EKKODB/ CI_EKPODB (and NOT EKKO/ EKPO), e.g. CI_EKKODB-ZZFIELD1/ CI_EKPODB-ZZFIELD2. We save and activate.

Using SE38 we go to include LXM06TOP (main program SAPLXM06) and double-click on include ZXM06TOP in order to create it.

We add the following variable declarations that will be used for holding the information whether we create/ change/ display a purchase order:

For item level:

TABLES: ci_ekpodb.
DATA: gw_aktyp.

For header level:

TABLES: ci_ekkodb.
DATA: gw_trtyp.

We now want to implement the transfer of information from the purchase order to our newly created customer screen and store activity type (i.e. create/ change/ display). To achieve that in CMOD we double-click on EXIT_SAPMM06E_006 (header level)/ EXIT_SAPMM06E_016 (item level), and double-click on include ZXM06U36/ ZXM06U41, respectively, in order to create it. Then, we add the following code:

For item level:

MOVE-CORRESPONDING i_ci_ekpo TO ci_ekpodb.
gw_aktyp = i_aktyp.

For header level:

MOVE-CORRESPONDING i_ci_ekko TO ci_ekkodb.
gw_trtyp = i_trtyp.

We now want to implement the transfer of information from our newly created customer screen to the purchase order. To achieve that in CMOD we double-click on EXIT_SAPMM06E_008 (header level)/ EXIT_SAPMM06E_018 (item level), and double-click on include ZXM06U37/ ZXM06U40, respectively, in order to create it. Then, we add the following code:

For item level:

MOVE-CORRESPONDING ci_ekpodb TO e_ci_ekpo.

For header level:

MOVE-CORRESPONDING ci_ekkodb TO e_ci_ekko.

Finally on the PBO of the newly created customer screens we add a module with the following code in order to render non-modifiable the Z-fields when the purchase order is being displayed (and not changed/ created). A new include is created for the PBO module.

gw_trtyp is used for header level and gw_aktyp for item level:

IF gw_trtyp EQ ‘A’. “gw_aktyp = ‘A’.

LOOP AT SCREEN.

screen–input = ‘0’.

MODIFY SCREEN.

ENDLOOP.

ENDIF.