Missing "RESERVED" BPM-Tasks from my Substitute in Taskcollection BPM OData

Question

Hello,
i'm developing a Integration-scenario with BPM-Tasks. Therfore i'm using the ODATA-REST Service.
The access to the Taskcollection shows me all my BPM-Tasks.
Now a second User activated me as his substitute. I expected that my TaskCollection shows me all the Tasks of my substitute, but he just delivered me the tasks that are in statuts "READY". The Tasks which are in status "RESERVED" were not shown in the TAskCollection.
Has anybody an idea, what i have to do for getting all Task in every status.
this is my request for the TaskCollection:
http://xxx:99999/bpmodata/tasks.svc/TaskCollection?$orderby=CreatedOn%20desc&$filter=Status%20ne%20%27COMPLETED%27&$expand=TaskDefinitionData&$inlinecount=allpages
There is one more Problem with the TaskCollection:
The propertie "SubstitutedUser" is always initial, even when the Task is from the Subsituted User by activated substitutionrule.
I'm thankfull for every idea.
Regards
Demetrius P.

Answer 1

Hello Andre,
thank you for your reply. That is unfortunately not the answer i hoped for ;-)
Than i have question for claiming a task. I'm always getting the same error:
Befor sending the POST-Request I fill the Header with a X-CSRF-token and the coockies. Here is my code and my URL i'm sending with the client-request. I have tested the same URL with the CHROME Postman and there it works fine:
Can you say me what i'm doing wrong?
URL-Request in "path": http://host:porthttp://czt.rz.sys.aok.de:52600/bpmodata/tasks.svc/Claim?&%26InstanceID=%27bpm%253A%252F%252Fbpm.sap.com%252Ftask-instance%252F0218e66cd9a511e3c1f800000ffbd0e3%27&%26SAP__ORIGIN=%27CZT_CZT_26%27/bpmodata/tasks.svc/Claim?InstanceID='bpm%3A%2F%2Fbpm.sap.com%2Ftask-instance%2F0218e66cd9a511e3c1f800000ffbd0e3'&SAP__Origin='CZT_CZT_26'
Code:
    DATA: path TYPE string,
      errortext TYPE string, "used for error handling
      subrc  TYPE sysubrc,
      l_str_subrc TYPE string,
      dummy TYPE string,
      l_wrk_message TYPE bapiret2,
      l_token TYPE string,
      l_instance TYPE string,
      l_origin TYPE string.
      client->refresh_request(    ).
    " setzen POST-Methode---------------------------
    client->request->set_method( if_http_request=>co_request_method_post ).
    "erst den absoluten Teil generieren lassen
    client->create_abs_url(
      EXPORTING
        path        = '/bpmodata/tasks.svc/Claim?'
      RECEIVING
        url         =     path
   CONCATENATE path  'InstanceID=''' i_instance_id '''&SAP__Origin=''' i_sap_origin '''' into path.
    cl_http_utility=>set_request_uri( request = client->request
     uri  = path ).
    "x-crsf-token auslesen und setzten für die Post-Methode
    l_token = client->response->get_header_field( me->co_csrf_token ).
    DATA: lt_cookies TYPE tihttpcki,
          lw_coockies LIKE LINE OF lt_cookies.
    client->response->get_cookies(
      CHANGING
        cookies = lt_cookies    " Cookies
    LOOP AT lt_cookies INTO lw_coockies.
      client->request->set_cookie(
       EXPORTING
         name    =  lw_coockies-name   " Name des Cookies
         value   =  lw_coockies-value   " Wert des Cookies
    ENDLOOP.
    client->request->set_header_field(
      EXPORTING
        name  =  me->co_csrf_token   " Name des Header-Feldes
        value =  l_token   " Wert des Header-Feldes
    client->request->set_header_field(
      EXPORTING
        name  =  'Content-Type'   " Name des Header-Feldes
        value =  'application/atom+xml'   " Wert des Header-Feldes
    client->send(
*    EXPORTING
*      timeout                    = CO_TIMEOUT_DEFAULT    " Timeout von Antwortwartezeit
      EXCEPTIONS
        http_communication_failure = 1
        http_invalid_state         = 2
        http_processing_failed     = 3
        http_invalid_timeout       = 4
        OTHERS                     = 5
    IF sy-subrc <> 0.
      l_wrk_message-type = sy-msgty.
      l_wrk_message-id   = sy-msgid.
      CALL METHOD client->get_last_error
        IMPORTING
          code    = subrc
          message = errortext.
      l_str_subrc = subrc.
      CONCATENATE 'Receive-Fehler:(' 'Code:' l_str_subrc '):' errortext INTO l_wrk_message-message SEPARATED BY space.
      APPEND l_wrk_message TO t_message.
      EXIT.
    ENDIF.
    client->receive(
      EXCEPTIONS
        http_communication_failure = 1
        http_invalid_state         = 2
        http_processing_failed     = 3
        OTHERS                     = 4
    IF sy-subrc <> 0.
      l_wrk_message-type = sy-msgty.
      l_wrk_message-id   = sy-msgid.
      CALL METHOD client->get_last_error
        IMPORTING
          code    = subrc
          message = errortext.
      l_str_subrc = subrc.
      CONCATENATE 'Receive-Fehler:(' 'Code:' l_str_subrc '):' errortext INTO l_wrk_message-message SEPARATED BY space.
      APPEND l_wrk_message TO t_message.
      EXIT.
    ELSE.
      xmlstring = client->response->get_data( ).
    ENDIF.
regards
Demetrius