How to get PO attachments?

Question

Hi ,
My requirement is to get the attachments of PO and send them via email .
I am looking for a FM which gets me the attachments in a PO (we can view attachments in PO display transaction ME23n. Select line item and click on button which has attachment icon. This will take you to the document display screen. You can also check your attachments through CV03n transaction. This is document display tcode in DMS.) .
My search in the forum says BDS_GOS_CONNECTIONS_GET can be used to get attchment list but it i don't get results in my system .
And FM BDS_BUSINESSDOCUMENT_GET_TAB which gets attchements
my importing values
LOGICAL_SYSTEM                  CSC_D20130
CLASSNAME                       Z2BUS2012
CLASSTYPE                       BO
CLIENT                          130
OBJECT_KEY                      1430000581
BINARY_FLAG                     X
TEXT_AS_STREAM                  X
still no result .  Did I miss something or any config required ?
Please help
Rhea.

Answer 1

Rhea,
I guess, a sample code will help you here. And as you rightly mentioned, use cl_binary_relation=>read_links_of_binrel for this.
Try something like this.
        gs_lporb-instid = 'Your PO number'.
        gs_lporb-typeid = 'BUS2012'.
        gs_lporb-catid = 'BO'.
        CALL METHOD cl_binary_relation=>read_links_of_binrel
          EXPORTING
            is_object   = gs_lporb
            ip_relation = 'ATTA'
            ip_role     = 'GOSAPPLOBJ'
          IMPORTING
            et_links    = lt_links.
if you want to check what you have to pass in ip_relation, check table MDOBLREL and field RELTYPE_O.
If you want to read the attachment by using function module SO_OBJECT_READ, you can do that by using lt_links-instid_b. By splitting it 17 characters in to folder_id & object_id (two parameters you required to read it in that function module).
Regards,
Gokul