Updating info type HRP1007

I have created a program populating info type 0000, 0001, 0007 and 0016. When updating 0001 manually or in dialogue mod, the vacancy get populated. I have been using HR_INFOTYPE_OPERATION .

I need to update info type HRP1007 . I've tried using RH_UPDATE_INFTY  and RH_INSERT_INFTY , but it doesn't seem to connect to OM. tcode PPOME when I look at the position.

    wa_p1007-plvar  = '01'.
     wa_p1007-otype  = 'S'.
     wa_p1007-infty  = '1007'.
     wa_p1007-begda  = p_begda.
     wa_p1007-endda  = '99991231'.
     wa_p1007-mandt  = sy-mandt.
     wa_p1007-istat  = '1'.
     APPEND wa_p1007 TO it_p1007 .
     CALL FUNCTION 'RH_UPDATE_INFTY'
       EXPORTING
         vtask               = 'D'
       TABLES
         innnn               = it_p1007
       EXCEPTIONS
         error_during_update = 1
         no_authorization    = 2
         repid_form_initial  = 3
         corr_exit           = 4
         OTHERS              = 5.

Anyone have any suggestions. It is certainly one of these things that I have to update behind the scenes, since I'm updating numerous records (one at a time. 

Any info would be appreciated.