soamanager_logon.abap

  DATA(lt_list) = cl_srt_wsp_account_factory=>if_srt_wsp_account_factory~list( ).

  DATA(li_account) = cl_srt_wsp_account_factory=>if_srt_wsp_account_factory~get_user_account(
    im_user_account_name = 'NAME'
    im_user_account_type = 'LOCAL' ).

  li_account->get_service_user_credentials(
    IMPORTING
      ex_username = DATA(lv_username)
      ex_password = DATA(lv_password) ).

  BREAK-POINT.
  
  ***********************
  
    DATA: lv_xstr TYPE xstring.

    DATA(lv_str) = |{ is_user_pass-username }:{ is_user_pass-password }|.

    DATA(lo_obj) = cl_abap_conv_out_ce=>create( encoding = 'UTF-8' ).

    lo_obj->convert( EXPORTING data   = lv_str
                     IMPORTING buffer = lv_xstr ).

    rv_value = cl_http_utility=>if_http_utility~encode_x_base64( lv_xstr ).

    rv_value = |Basic { rv_value }|.