RFC to BPM and backward. error SYNCHONOUS_MESSAGE

Question

Hi everybody!
Help me pls!
I am learning BPM and want to make easy synchronous example.
RFC sends the request to BPM and recieves the response.
My RFC is named Z_TEST_CALL_WEBSERVICE.
I have created:
in Design
mi_rfc_request - abstract asynch interface (message = Z_TEST_CALL_WEBSERVICE)
mi_rfc_response - abstract asynch interface (message = Z_TEST_CALL_WEBSERVICE.Response)
mi_string_abstract - abstract synch interface (output message = Z_TEST_CALL_WEBSERVICE, input message = Z_TEST_CALL_WEBSERVICE.Response)
Test002_MyScenario_001 - integration process, that have:
Receive0 - Receive step (name = Receive0, message = rfc_request, mode = Opens S/A Bridge, asynch interface = mi_string_abstract)
Send0 - Send step (name = send0, mode = Closes S/A Bridge, message = rfc_response, Opened by = Receive0)
rfc_request - comtainer element (category = abstract interface, type = mi_rfc_request)
rfc_response - comtainer element (category = abstract interface, type = mi_rfc_response)
in Configuration
have imported my Inegration Process and have named him "mybpm"
receiver determination (Z_TEST_CALL_WEBSERVICE -> mybpm)
interface determination (Z_TEST_CALL_WEBSERVICE -> mybpm, inbound interface = mt_string_abstract)
sender agreement (defined Communication Channel)
When i call my RFC from R/3      
CALL FUNCTION 'Z_TEST_CALL_WEBSERVICE'
  destination dest
  EXPORTING
    var           = '1'
IMPORTING
   RET           = tab
   answer        = answer
EXCEPTIONS
         system_failure        = 2 MESSAGE msg_text1
         communication_failure = 1 MESSAGE msg_text
         other = 4.
i get error.
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<!-- Call Adapter -->
<SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="1">
<SAP:Category>XIAdapter</SAP:Category>
<SAP:Code area="BPE_ADAPTER">SYNCHONOUS_MESSAGE</SAP:Code>
<SAP:P1/>
<SAP:P2/>
<SAP:P3/>
<SAP:P4/>
<SAP:AdditionalText/>
<SAP:ApplicationFaultMessage namespace=""/>
<SAP:Stack>Der Prozess unterstützt das gegebene synchrone Interface nicht oder unterstützt keine synchronen Nachrichten Возникла особая ситуация CX_WAPI_DEF_PROPERTY_NOT_FOUND (программа: SAPMHTTP, include , строка: 0)</SAP:Stack>
<SAP:Retry>N</SAP:Retry>
</SAP:Error>
I tried translate from German ...
"Process doesn't support this synchronous interface or doesn't support any synchronous message."
what do i wrong?

Answer 1

The issue has been resolved. The integration process needed to be activated in sxi_cache. Once it was activated, the interface ran successfully.
But ...
When i start the process, i get TimeOut. Object rfs_response in Send0 don't had instance.
I added transform (rfc_request -> rfc_response) and get 'success'.