Requirement for custom mapping function in our case: Outgoing Payment File
On our BAFF (Bank of America) formats, partner (vendor) address was mandatory, in our systems though we either had a physical address or PO Box address, when physical address is empty a custom function was required to fill in the PO Box address instead.
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I started with copying DMEE_EXIT_TEMPLATE_EXTEND_ABA to a customer namespace Function Module like ZZDMEE_EXIT_FOR_ADDRESS.
If you copied correctly, your import parameters will look like this
Your Export Parameters
In Debug Mode, this FM carried data as follows
I_ITEM had FPAYH, FPAYHX and FPAYP structures
So based on what is available, this snippet of code did the trick.
FUNCTION ZZDMEE_EXIT_FOR_ADDRESS.
*"----------------------------------------------------------------------
*"*"Local Interface:
*" IMPORTING
*" VALUE(I_TREE_TYPE) TYPE DMEE_TREETYPE_ABA
*" VALUE(I_TREE_ID) TYPE DMEE_TREEID_ABA
*" VALUE(I_ITEM)
*" VALUE(I_PARAM)
*" VALUE(I_UPARAM)
*" REFERENCE(I_EXTENSION) TYPE DMEE_EXIT_INTERFACE_ABA
*" EXPORTING
*" REFERENCE(O_VALUE)
*" REFERENCE(C_VALUE)
*" REFERENCE(N_VALUE)
*" REFERENCE(P_VALUE)
*" TABLES
*" I_TAB
*"----------------------------------------------------------------------
*{ INSERT ECDK916684 1
* Extended template function module -----------------------------------*
DATA lt_item TYPE dmee_paym_if_type.
lt_item = i_item.
IF lt_item-fpayh-zstra IS NOT INITIAL.
o_value = lt_item-fpayh-zstra.
c_value = lt_item-fpayh-zstra.
ELSE .
o_value = lt_item-fpayh-zpfac.
c_value = lt_item-fpayh-zpfac.
ENDIF.
*} INSERT
ENDFUNCTION.
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