PO release/distribution (from SRM to backend) FModules?

Question

Hi experts,
I need to create a report that allows the user to release/distribute (sorry if these are not the right words to call the process) a PO ... My report actually retrieves the header of the purchase order ,that has status "waiting" ("park") in SRM (a change version)... so, given the header, is there a FM to release easily the po ?
(excuse the terminology, I'm not sure that's correct: I talk about release/distribute a PO meaning the process that brings a correct po from SRM to the backend).

Answer 1

Hi sanjeev, tried your solution without success. I get an error message, BBP_PD381.... I call the FM in this way:
CALL FUNCTION 'BBP_PD_PO_STATUS_CHANGE_WF'
  EXPORTING
    iv_guid                        = srm_change_header_guid
    iv_status                      = 1
where srm_change_header_guid is the header's guid of the change version on my PO, the one I'd like to release.
Some infos from debugging.... the error comes from the call function that follows:
CALL FUNCTION 'CRM_STATUS_CHANGE_FOR_ACTIVITY'
(source report: LBBP_PDF0Y)
values of the parameters in debug are:
check_only = X;
client = sy-mandt;
objnr = p_new_guid (which is the guid of the header of the change version)
vrgng = 'RELP'
XNOAUTO = 'X'.
The message is hard to translate in english, anyway says something like "error on modify state RELP. "Release purchase order not allowed".
Any hint?
Thanks in advance.