Question conserning a remote-enabled BAPI

Question

I have created a quick and 'easy' BAPI that will return a table of shipping document numbers.  The code is below:
FUNCTION z_bapi_likp_get_list.
*"*"Local Interface:
*"  IMPORTING
*"     VALUE(ZBAPI_DELIVERY_DOC_IMPORT) TYPE  ZBAPI_DELIVERY_DOC_IMPORT
*"  EXPORTING
*"     VALUE(ZBAPI_DELIVERY_DOC_EXPORT) TYPE  ZBAPI_DELIVERY_DOC_EXPORT
*"     VALUE(RETURN) TYPE  BAPIRETURN
  SELECT vbeln FROM likp INTO zbapi_delivery_doc_export
    WHERE lddat = zbapi_delivery_doc_import-lddat AND
          vstel = zbapi_delivery_doc_import-zzvstel.
  ENDSELECT.
ENDFUNCTION .
ZBAPI_DELIVERY_DOC_IMPORT is a structure that contains two fields: LDDAT and VSTEL
ZBAPI_DELIVERY_DOC_EXPORT is a structure that contains one field: VBELN.  I tried to follow  and it seemed to work great but I have a slight 'problem'.
I need to include the leading zeros on the document numbers.  I tried to loop through the structure (after the select) and append the zeros that way but it wasn't allowing me to loop through the structure.  Does anybody have any ideas/suggestions?<a href="http://www.erpgenie.com/abap/bapi/example.htm">this step-by-step example</a>

Answer 1

Well first of all,  if  ZBAPI_DELIVERY_DOC_EXPORT is not a table type, then you are not getting an internal table back from the BAPI, it is a single line, or structure, which is why you can't loop at it.   If you want to return this as a table, then you need to either make ZBAPI_DELIVERY_DOC_EXPORT a table type, or use this in the TABLES parameter tab when defining the function module(BAPI) in SE37.  Right now it is defined as an EXPORTING paramter.
As far as the leading zeros are concerned, you should be getting the leading zeros, but you may want to code your select like this.
  Select vbeln from likp into corresponding fields of table
                        zbapi_delivery_doc_export
                       WHERE lddat = zbapi_delivery_doc_import-lddat AND
                                     vstel = zbapi_delivery_doc_import-zzvstel.
Of course this coding will only work after you have adjusted the ZBAPI_DELIVERY_DOC_EXPORT parameter.
Regards,
RIch Heilman